Wow you have messed this thing up.
Ok. I will give you to options to fix your phone. You choose. Don't install a sprint rom there is no need since you can have gps without it now.
Option 1
1. Roll back the phone.
http://forum.ppcgeeks.com/showthread.php?t=21161
2. Install Verizon MR1 rom.
http://www.htc.com/us/SupportDownloa...cat=2&dl_id=99
3. Install gps cab for agps but no standalone gps.
http://wiki.xda-developers.com/index...VerizonAGPSFix
Option 2
1. Roll back the phone.
http://forum.ppcgeeks.com/showthread.php?t=21161
2. Unlock the phone.
http://forum.ppcgeeks.com/showthread.php?t=33857
3. Install a custom rom. I use DCD 3.3.4.
http://dcd1182.n715dp.com/index.php?...itan_3.3.4.exe
4. Follow agps info in wiki (option 1) for custom roms or do standalone gps here
http://forum.xda-developers.com/showthread.php?t=458923
And don't forget the thanks button if I have helped you.