Charles Fleischer was interviewed by Slashfilm.com regarding "The Stooge", where he goes on to say it could be just a rumor.
But don't throw yerselves in the Dip yet kiddies, from the looks of things it seem he's just speculating. Based on what I've read so far the project is in it's very early stages, so there probably hasn't been any need to contact any voiceactors yet. So hold in there until we get more news on this. Keep your fingers and ears crossed and hope Gary Wolf can get Roger back in action again.
Thanks again to Bunnyfriend for the heads up.