From what I've seen your options are:
1) Run. If you get caught you'll get nailed for all of the original charges, along with whatever they can pile on to that from your attempted flight.
2) Run, and use your friend's info to try to change your identity. If you get caught, the above will apply, along with the additional fraud charges. And you'll land your friend in hot water as well.
3) Turn yourself in. You'll get nailed with the current charges, but won't get anything associated with the above tacked on(probably, I don't know the details of the situation). *Might* score points with the judge, depending on how often you've had run-ins with the law in the past. Good behavior/parole might cut down on the time you actually serve.
In all honesty, gritting your teeth and taking it on the chin is likely your best bet.