A>if you edit or create a fresh isboxer macro and then upload it to the isboxer addon you must either 1) log out and back in or 2) do a /reloadui (which last time i heard is not effective anymore until lax fixes the bug). Therefore in the proccess of messing with your addons you may have reloaded your interface and refreshed the isboxer addon. thinking the whole time it was the removed addons x, y, and z that fixed your issue.

B> the default wow key combination for follow is F11 so if one of your addons hyjacked the F11 bind that might have been the issue.