..i got an answer to this one.
There is a cylinder in teh transmission with a ball in it that, when you put it into park, reverse..etc it moves..this ball becomes worn and gets smaller, making it hard for it to come out of its resting position in park.
Happend to my friends 1994 740i, they had to rebuild a part of the transmission. I believe it was around $1000 to fix.
We all get the urge...Saturday early morning...nothing to do till noon...
The aural sensations of 1st gear WOT
**CGM **(Certified Garage Mechanic)