If they get an order against mtgox that's just the beginning. Even if a court is quick to grant relief against mtgox that does not mean enforcing that order will be anywhere close to easy. They could get an order today saying mtgox owes them $75,000,000 - that doesn't mean they'll ever see a dime of the money.
Yeah and no. You're talking about VCs playing hardball here. We have no reason to believe that MtGox has $50,000,000 in liquid assets so they're going to be willing to settle for something else. Like IP rights to the trading platform and the Bitcoin trademark. The plaintiffs could make "a piece of MtGox" the thing they aim for in settlement negotiations (it wouldn't be the first time VCs have basically taken over a company this way).
The question is how long MtGox can go without blinking and whether they'll cave in the face of a long, expensive out legal battle.