I want to go from GC1.9.1 back to stock do I need to do a factory data reset before using this method? Also is getting back to EE4 after this as easy as an ota update?
I wouldn't expect you to need to do a factory data reset, as ODIN essentially wipes your phone anyway (I could be wrong on that, but I haven't wiped before flashing a stock ROM in ODIN a number of times and all has been well). And yes - once you have flashed the ED2 stock here getting back to EE4 should be as simple as an OTA update.
I performed all all steps asked but now my phone constantly crashes. Is there not a Samsung/Verizon bloated file included in the md5 file? Just a FYI also, I wanted to perform this in order to remove a gmail account that would not with numerous hard resets......long story short, gmail is still there even after this. ???