If it was a steel or Ti frame, the answer would be clear that realigning it is possible and worth the trouble.
For an Al frame, particularly a very light one, I'd be hesitant to straighten it. Aluminum tends to fail rather suddenly and doesn't take to bending and rebending very well. I assume if the seatstay is bent, the chainstay is too and realigning the stays would require some real effort.
Short answer; kiss it goodby.
Last edited by HillRider; 07-15-09 at 08:23 AM.