Ask-
If you are at all concerned about the longevity of the tree, hire a consulting arborist! Or at the very least, a certified arborist with a good reputation. Go to
http://www.isa-arbor.com and search the "find and arborist link". Also try the ASCA (American Society of Consulting Arborists, I believe) site, I think it's
www.asca.com or .org, not sure which.
Short of those suggestions, go to
www.arboristsite.com, register, ask the same question on the commercial board, and see what the response is. Those guys make thier living by trees, they know what they are doing! Not saying the guys and gals here don't, but the AS folks are probably a little more current on info. Several of them even worked the clean-up after Isabel, you may have run into some of them.
I'm not familiar with the tree so I can't give you any suggestions. I would NOT, repeat, NOT fertilize it after straightening. Only water. Fertilization only pushes new growth, which with a damaged root system could eventually cause death.
HTH, look into the links I provided!
Dan