I had one of those rack locks freeze up on me last year. I ended up taking one of my bindings off (had tool in pocket) and slipping the board out of the rack. No-one said shit, although I did get some looks.
I'd have been happier if someone had come up to me and said something, or at least taken my picture or something.
I had a combo lock reset when I locked it to go to the bathroom. When I came out and realized the lock wouldn't release I had to spend the next 20 minutes scrolling through possible combo numbers until I hit the right one. Not one person said a thing during the whole time I was farting around with my lock.