I have two ways of possibly fixing this, although I'm missing "a piece of puzzle":
- Have him become aggressive as normal Fawkes and try to set him as an ally again
- Try to get him to move without setting him as aggressive.
I've tried all the console commands that I know and then some, but I am out of ideas. I am running FO3 GOTY, with mods. I also disabled all of them to see what caused it, and he was still "stuck".
Thanks for the help!