Whitehall's Olly Robbins 'held back key advice' on tech for Irish border per The Sun

If this Sun report https://www.thesun.co.uk/news/6259758/olly-robbins-max-fac-irish-border-customs-partnership/ is true then Olly Robbins should be looking for another job after the weekend, unless he 'held back key advice' because he was told to by the PM.

'Whitehall Brexit adviser Olly Robbins 'held back key advice' on tech that could solve the Irish border issue

The Whitehall Brexit guru only talked up the Customs Partnership plan when he was expected to make a strong case for Max Fac

... 

Seething Brexiteer Cabinet Ministers are convinced Theresa May's pro-EU aide could have made a stronger case for the hi-tech "maximum facilitation" customs option at the crunch meeting of the Brexit "war cabinet" last week.

 Olly Robbins has been accused of holding back key evidence for Max Fac

Olly Robbins has been accused of holding back key evidence for Max Fac

The high-flying civil servant talked the 11 strong committee through the merits of the No10's previously  preferred complex Custom Partnership over the option backed by Boris Johnson.

Mr Robbins said "Max Fac" would mean more red tape for 145,000 companies trading with the EU.

But Whitehall sources told The Sun that Liam Fox and David Davis both believe more more options about "Max Fac" could have been included in the briefing.'

The remainers are playing dirty, is Olly Robbins one of them? Is the PM?