I have owned MOV since Jan 2004 and have made two very profitable side trades in 2006, all from the long side. MOV is not a stock for momentum speculators. You have probably seen the equivalent of 10 days' trading volume just today. You may be correct in your entry point. But, under normal volume conditions, you will have a hard time liquidating any significant position - say 5,000 shares or more.
Before March 2006, this was just a sleepy buy and hold stock. Once all of the new blood has been flushed out, MOV will return to its old form.