Kent 'Smallzy' Small left 'shocked' and 'reeling' as he fills in for The Kyle and Jackie 'O' Show after Jackie 'O' Henderson sensationally quits

Kent 'Smallzy' Small was left 'shocked' and 'reeling' on Wednesday morning following news The Kyle and Jackie 'O' Show was no more.

'We are waking up to a very different KIIS,' he told listeners as he filled in for the radio titans after the popular KIIS FM breakfast show was taken off air following news Jackie 'O' Henderson had sensationally quit the show.

'I'm not going to lie to you, this is probably one of the most insane days of my radio career,' he continued, adding he was 'shocked' and 'reeling' from the news.

He went on to pay tribute to the radio stars.

'I grew up listening to KJ and my first job in radio was on the Hot 30 with them back in the day. I used to drive the Thunders. I lied to get the job, I was on my Ps.' 

'They were very lovely and they were always very kind,' he added. 

KIIS FM's parent company ARN announced on Tuesday that Henderson's $100 million contract has been terminated after she told executives she 'cannot continue to work with Mr Kyle Sandilands' following his harsh comments on-air that left her in tears. 

Sandilands has been suspended and given 14 days to 'remedy' the breach, or else faces termination. 

ARN provided written notice to Sandilands stating that it considers his behaviour during the show on February 20 'an act of serious misconduct which is in breach of ARN's services agreement with Quasar Media'.

The KIIS breakfast show will be taken off-air immediately, with 'interim arrangements made for the show'.

ARN has offered Henderson the possibility of an alternative show on the network.

Daily Mail has reached out to Henderson and Sandilands for comment.

Sandilands and Henderson signed a 10-year deal with Australian Radio Network (ARN) in 2023, and have eight years left on the contract.

They were paid a reported $200 million in that landmark negotiation and earned approximately $47,000 per episode.

Henderson, 51, has been AWOL from the Kyle & Jackie O show since Friday, 20 February, after Sandilands, 54, accused Henderson of being unfocused at work.

During the on-air feud, Henderson broke down in tears when the pair were discussing Andrew Mountbatten-Windsor.

Sandilands got angry at her when she proceeded to read out the disgraced royal's birth chart.

He lambasted his co-star, claiming that her love for astrology was affecting her work.

When Henderson attempted to defend herself and accused him of launching an attack on her, he stated he was only expressing the 'facts'.

An emotional Henderson said she was deeply 'offended' by his brutal comments during the clash.

She took a leave of absence following the altercation, and was expected to return to the show on March 2.

On Monday, it was announced that her return to the airwaves has been pushed back another week.

Sandilands started Tuesday's show by revealing that Henderson would return to the airwaves 'at some stage' - however, that was not to be.

Last week, Sandilands admitted he wished he had handled things differently.

'I obviously upset her. Maybe, in hindsight, I shouldn't have said it on the air. But we say a lot of things on the air here,' he said.

'It was never meant to hurt her feelings and obviously it did. I regret hurting her feelings. No one wants to hurt someone. Especially someone you care for.

'I don't really know. The show is just ploughing ahead anyway. I'm just leaving this up to management.'

Sandilands went on to say he just wanted to be back on the air with everyone happy, adding: 'I want her to be happy and enjoy it. I also want the same thing.'

He then joked he didn't care if any of the other producers or staff members were happy because he would 'swap them all out in a heartbeat' for his co-star.

He also dismissed reports his long-running radio show was coming to an end after he was absent from the show on Thursday.

Speaking on Friday's broadcast, he addressed headlines suggesting he had been pulled from the airwaves, insisting his absence was simply due to a sick day.

The presenter explained he had been up through the night caring for his unwell son.

'I haven't vanished, everyone,' he said at the start of the show.

'According to the newspapers, The Kyle & Jackie O show was over, and I vanished. It just goes to show you can never believe what you read in any of the newspapers.

'I feel they may have had their phones cut off; no one even rang to check.'

Sandilands said his three-year-old son Otto had been coughing throughout the night.

While Henderson's walk-out came as a shock to many, some industry insiders said it was a long time coming.

Craig Bruce, who was program director at 2DayFM during Kyle and Jackie's reign at the station, told 10 NEWS+ on Monday that the show was likely over.

'I think that they're drifting apart. It's kind of understandable. They have been together now for close to 27 years,' Bruce said.

'So they have spent half their lives in a small room together.'

Asked if this rift was 'the beginning of the end', Bruce said he felt it was.

Similarly, entertainment journalist Peter Ford claimed on Monday that it was likely that the duo's contract would be 'ripped up and binned'.

He doubled down on his assertions on Tuesday's Sunrise, claiming that Henderson had 'sought legal advice' to weigh up her options.

'I'm hearing Jackie O feels she has to take a stand here and she has to do it to show that you do not have to be demeaned and belittled in your workplace as she was on that particular day when Kyle gave her that dressing down,' he said.