in an asymetrical sweep situation the aircraft would have a tendency to roll toward the swept wing, this is because of the increase in vertical component of lift on the "unswept" wing. Compensation for such an event would initially be to input large airleron and rudder correction to hault the rolling tendency, much like single engine flight in a multi-engine aircraft. The second thing to attempt would be to try and return the swept wings to their previous position manually in an attempt to un-jam the wings. Landings would have to be made at a slightly higher speed.

Asymetrical wing sweep in the F-14 was tested by the Navy during flight trials, and pilots determind that the aircraft was capable of carrier landings at full sweep differential. see the following site

http://www.f-14association.com/stories-01.htm