GSM on Sprint Galaxy SIII (SPH-L710)?

I know people have hacked Verizon droids like the Bionic, the Droid 4, the Galaxy Nexus, and Verizon officially announced that they will be sending OTA updates to the HTC Rezound, their Galaxy S3, and the LG Spectrum.

Would it be possible to hack the Sprint Galaxy S3 and enable GSM on it? I know their SIM card is embedded, but I think its simply covered by plastic, not soldered on, here is the picture of the replacement part.