Broken Sprint TP, flashed ROM, Asurion...

[vzwdts]

I wouldn't be concerned about the cooked ROM on the device. The warehouse doesn't have the time to check each individual phone and ensure that you didn't load an unauthorized ROM nor will they even give much of a damn when your screen is cracked. They get the phones at the warehouse, pull them out of a box, scan the barcode on the back and off it goes to become someone else's problem. I wouldn't waste my time.