Hi Kirk -
Did you pull the tranny pan and see if you could see any shavings or clutch material? How did the fluid look?
I'll let some others chime in here with some other hopefully helpful responses, but my '93 starting doing something similar to what you described, and I ended up having to have a rebuild as the shop had seen chunks of clutch material in the pain and mixed in with the fluid. Hopefully that won't be your problem, but if it is, just give thanks that you don't have a 722.6 that needs replacement!
-Michael