YES the official update does break GPS functionality.... To recover, you will need to flash the STOCK verizon ROM.... And you will need to let the customizations run....
EDIT - It turns out that I do INDEED have the new PRI 2.03_002 still on my phone AND GPS works just fine..... Doesn't lock and faster, but doesn't lock any slower either.... WEIRD...... Here's a link at XDA with a picture of my EPST showing the info.....
http://forum.xda-developers.com/show...7&postcount=51