In the pre season friendlies this year he was very poor, and at fault for loads of things that went wrong when we played Salford in game 1 of the season, not sure how long it was after that before they dropped him.

Paul Wellens

All he has said is that he hasnt signed for another club! According to the terms of the contract he signed he shouldn't even be talking to another club. I see he hasn't denied that....

Who ever said that Sam has talked to another club?
Maybe it is the club who have instigated everything.
Perhaps Sam was happy with the 3 year clause and wanted to play those years out at Wigan then see how he feels. Suddenly he finds the club are offering him to all and sundry and especially those who will cough up the dosh.
Perhaps this "I've not signed for any other club" is him starting to decide that his club for the next number of years will be Wigan.
A declaration from Sam that he will se his full contract out at Wigan would be very nice.

Just a thought, but maybe Sam saying he hasn't signed for any other club is a bit like Sam saying: "I can promise you Wigan are not signing Andy Powell. this isn't happening" about three weeks before Wigan announced they had signed Andy Powell

It would also be hugely different than merely stating he hasn't signed for another club (yet?). I took no comfort whatsoever from his statement whereas the OP took it to mean he wasn't going anywhere.