Sean, whose only relationship with WISN/ClearChannel is that WISN carries his program (it is syndicated by ABC Radio, Sean's radio employer), talked about it on Tuesday and did say something to the effect that Mark will be back (didn't hear it myself, so I don't know if it was just his opinion or what he has been told by WISN/ClearChannel).
Rush is under contract to ClearChannel, and ClearChannel has a gag order on.