The company served up another glimmer of hope that it can navigate its way out of its current mess. Just when it looks like the stock's rally is out of fuel, Spirit Airlines (SAVE 16.48%) finds a way to send its shares even higher. Today's near-20% jump is being driven by another round of news that the struggling airline may yet find a way to sidestep a potential bankruptcy. Another step in the right direction It's been a storied week for the company to say the least. Last Friday its credit card processor ( ...