Question [Q] Carrier/SIM unlock xt925?

Hello. I need to carrier unlock or SIM unlock my xt925, since I'm about to travel and the roaming charges are CRIMINAL. I've seen some instructions in the forum for the CDMA version (xt926), but they don't seem to apply to the GSM version. Is is possible to SIM unlock the xt925 without resorting to the carrier at all? I'm in a 2 year contract!