Sprint Specific Selling Phone Question

[nrfitchett4]

ok, switching to t-mobile for the hd2. I am still under contract for my tp2. What I am thinking about doing is switching my tp2 back to my old phone, then cancelling my service, selling the phone and then paying the etf.
Will this work? Will the ESN be clean? I don't want to screw anybody over and I want this to be legit.

Comments, questions, flaming????