About the fiefs, its only against the rules if a attacking enemy army is closing in and an ally or the same clan then attacks its own fief in order to obstruct the enemy attacker and delay for a day or more, thats also what some clans have done in the past and gotten punished for.
If this doesn't apply then it's ofc no problem to make a transfer battle, we all have done it.
It would be better if all transfers were done with the transfer fief function, regardless of whether the fief is gonna be attacked or not.
In this case, however, that wasn't possible (since the fief owner is banned), so reclaiming the village by attacking it is perfectly legitimate. Furthermore, there was no enemy army nearby and "it was coming" (when?) is not a valid excuse.
Before somebody starts screaming "omg biased Nord admin", this is chadz' opinion as well.
Certain UIF members got accused of cheating and were banned prematurely to get things straight and make them explain the situation.
I know you already specified in a later post that you meant something else, but I would like to state it officially anyway: players got banned solely based on anonymised (no player names) game logs. We have received reports of cheaters in the past, but they were made without a shred of proof and/or by biased sources; those have nothing to do with the recent bans.