Rio and Anton were amongst a handful of Premier League players who refused to wear the t-shirts in October in protest at the FA's leniency towards those found guilty of racism.
Carlisle has re-opened the can of worms in his new autobiography 'You Don't Know Me, But...A Footballer's Life', in which he writes: 'Kick It Out is one of few bodies doing something positive about the issue, but there are some who evidently feel it is not doing enough.
'Rio and Anton Ferdinand were among a group of high-profile abstainers along with Joleon Lescott, who has not worn one since Newcastle's Turkish midfielder Emre was cleared of racially abusing his Everton team-mate Joseph Yobo, and Jason Roberts.
'At least Jason was vocal about his reasons. I don't mind people disagreeing but at least say why.
'Jason apart, the Premier League 'big' players happily throw in a grenade but do nothing when it explodes, nothing other than appear to hide behind their advisers.
'That's because they are s***houses. They have made their 'statement' for all to see but how many are prepared to stand in front of the cameras and be counted?
'The impression conveyed is that I have failed (as PFA chairman) to get people to unite and support the cause. Not only that, I feel under attack from a group of players questioning my position and representation of them on the issue. This has really hurt me.'
What is a s***house? Isn't that a compliment as in 'built like a brick s***house'? Maybe the 'five o-levels' Clark was complimenting the Ferdinand brothers and we've all misinterpreted him?- stanman