For now I found the steps to do this. Once you have your MSL, go to the phone screen and enter this:
##GPSCLRX#
As soon as you do this, you'll be prompted for a password...this is your MSL # that you can get from Sprint customer service. Once you enter your MSL code and hit enter, it will let you know that it was accepted and then your device will reboot in 10 seconds.
This fixed my issues with my EVO rebooting everytime I needed to use any app that used GPS. From reading the sprint forum where I found this fix, it seems to help many other users there as well!