1. Open bloodgulch with Eschaton 0.7 or higher.
2. Go to bloodgulch's matg tag and enter the reference swapper.
3. Somewhere in that is a weapon called "weapons\flag\flag" you may have to click on "Class" and scroll all the way down.

4. Swap that with any weapon, even the oddball.
Note 1: This change is very CSS and should not create problems.
Note 2: If you null it out, it will crash Halo.
EXTRA NOTES:
Note 3: Only weapons can be swapped.
Note 4: The only weapons used as a flag are the oddball and the flag. This means that if you swap with any other weapon, it's treated as such and anyone can pick it up (you still can't score with it).