Found the answer to my own question
turns out the answer been all right there in the Titan forum. There are several values under supl agps that can be changed (Add them if they are not there already)
[HKEY_LOCAL_MACHINE\SOFTWARE\HTC\SUPL AGPS]
"EnableGPSSmartMode"=dword:00000001
"GPSMode"=dword:00000002
"EnableAGPS"=dword:00000001
This came straight from
http://forum.xda-developers.com/showthread.php?t=363431 I believe the titan section of ppcgeeks also have extensive information in a section on this.
At any rate the main entries of interest are the gpsmode, enableagps, and enablegpssmartmode
From what I gather, setting gpsmode to 1, enableagps to 0 and enablegpssmartmode to 0 will completely put gps into a standalone mode. This is confirmed when I changed to these values. Absolutely no data connection was initiated
The most assisted mode seems to be gpsmode 2 or 4 (from what i heard, 2 is slower than 4 but gives more accurate fix with 4 only availlable with sprint), enableagps to 1 and enablegpssmartmode to 1.
It also seems that you don't have to soft reset the phone to actually change the gps mode. You only have to quit and restart a gps utilizing app to reinitialize the gps to get the new reg changes to take effect.
Much appreciate if anyone else knows more and want to comment.. Thnx