Turi - Wrestlign cna be a great self-defense. Really, there's very little submission style stuff. It's all to pin your opponent while making it hurt. Tapping out is for pussy's.
Anyway, just two weeks ago I was in a fight, and I used a double-leg takedown (standard move) to take this kid to the ground, then everytime he rolled over (to avoid my flurries of punches) I caught him in a half nelson and rolled him back.
So, yes, if used properly, wrestling can be a very good self-defense technique.
-Don Ethereal