Pillman was included as being in the Doomsday match on the Pre-PPV hype show for Uncensored 96 so it must have been a last minute decision to take him out.
He was definitely right to get out of the match as he most likely would have done the job
I recall his last appearance on WCW programming being on an episode of Nitro where he was holding up smart-type signs in the crowd and Bischoff yelling "Get him off camera, get him out of here!"