umm... there is no race retainer to fail, it's crafted into the tailhousing, and if something were to damage it i think the whole tailshaft would be noticable damaged as well.
with the tailshaft loose, there is going to be considerable play in the output shaft, as there is nothing holding the bearing in, and it comes loose. rockyraccoon, i would highly advise you to drop your exhaust, upbolt your tranny-to bellhousing bolts, and pull that sucker out of there. it will make your life a whole lot easier for whatever you're trying to do. i know it seems like a bitch pulling the entire tranny, but trying to silicone it up and tighten up the tailshaft housing bolts is going to be trouble too, along with whatever else you plan on doing.