As good a player as Shenton is, one man doesn't make a team...remember Warrington finished a lot higher up than us last year and we stuffed them without Sherwin (who many would see as a more influentional player)
Either way, I wouldn't be risking Shenny if it is such a 'risk' - Id rather he had an extra 9 days off so he would be fit to run riot against Bradford. If it is just a bit of brusing I would think he would probably be ok. Id be more worried about anyone targetting Shiftys fingers when he gets tackled