I've never had this type of thing happen to me.  

I do have a question though. Is your friends ex hot? And did you go through with the session?

"I was surprised to see her behind the door. However, there was no way I was going to go thru with it. I used to bang her for FREE when we were cheating on her husband (my friend). Hell, that's why she's now his EX-wife!

a massage parlor gal recognized my name from the fact that some ten years earlier she had been a health aide for my grandmother when she was in a nursing home.

We had a long and pleasurable relationship.

(With the massage gal, I mean, though my relationship with my grandma was also pleasurable, but obviously...

experienced provider should be able to prevent these types of situations from happening.

rob. 2 years after I graduated college, I walked in for a massage/happy ending appointment and it was a with a girl I easily recognized from college. We had well over a thousand students in our class, so its possible she didn't remember me. During the massage we were talking and she mentioned that she in fact went to my college. When she asked me where I went (prob. seeing if I went there as well), of course I lied and mentioned a neighboring school. We finished the massage (great HJ by the way!) and that was that. Never went back nor ever saw her again.  

A little awkward for me, but when you're horny, you do what you have to do