[harmbu]

Oops! I did what I hate about other coaches and umpires. I confused obstruction with interference. This does remind me of a funny story though. The umpire (hopefully confused) called instruction. I would have asked if it were a combination of interference and obstruction, but he didn't seem to be in the mood for jokes at the time.

Thanks for all of the replies. I know that I can always go here and find the answers to my questions.

I have edited my original post to correct my mistake.