Multiboxers exceeding limits

Is there any mechanisms in effect to prevent someone from buying a vpn, and then using that VPN on another 5 man team, to bypass the 5 man multiboxer limit? Because lately, I've seen a few horde boxers with 10 people, acting like one. They're very clearly behaving differently than two multiboxers moving together and cooperating (which also happens a lot and which I don't mind) because they're all on follow, and they all seem to use spells and abilities in sync with the other team.

It becomes especially apparent when some of the characters gets stuck in the terrain or when they mount up at the *exact* same time.

You can report the player with a ticket in-game. If he's indeed evading the server's limit, he'll not like what will happen to all of his accounts if he's caught.