Can I "sell" my student loans to another company?

I recently learned that my usurious private student loan lender expects me to continue making payments that I will not be able to afford on my graduate student fellowship when I go back to school in the fall. (This is after a cute bait and switch by my department letting me know that I’m not allowed to work while in school.)

So I am backed pretty tightly into a corner here. What I would optimally like to do is consolidate all my loans under a lender that will permit me to defer payments until after I finish my PhD. Is this possible? If so, can you recommend a lender?