I've has my front wheel turned almost ninety degrees sideways in the field and didn't crash. The key to dealing with these situations is to have a relaxed grip on the bars. Any drill that develops this, bumping, rubbing (shaddup Kwakerson), dirt drills all help. In panic situations where your grip is strong because it has to be, you need to develop the reflex to release the brakes, loosen the grip, and steer your way out or set up a controlled fall. This is not always possible. Bad stuff happens to experienced bike handlers. But an awful lot of it can be avoided by making an honest effort to improve your bike handling. We try and teach these things in the clinic, along with homework assignments.