Unfortunately, I never figured out how to solve the problem. I took my phone into Sprint the other day and lucked out on the repair technician. He was messing around trying stuff and had a moment of realization when he booted into Clockworkmod. Even though I had voided my warranty, he still let me replace the phone for the $35 fee. I walked out with a brand new Photon 4G. I'm so happy, it's like Christmas in May!
To others who have this problem: sorry, but I don't know what to tell you! Mine was probably bricked. The MSL number didn't connect the phone and neither did anything else I tried. Best of luck to you.