im pretty sure he's lagging...i've seen lots of times people hanging around tower and guard just watching em...u see him near you when server thinks he's still far away from guard rage...
yet - sadly - bannable
You are not correct there.
He could have reached that spot and lagged, or lagged slightly before that. but it that happens, Karis guard would have pwned him.
Regardless of that, lag or no lag, he moved his toon to that spot totally on his own account. LAg or no lag doesn't matter. Server lag only slows the players around you, not yourself. If he did move there, he did so willingly and knowingly, which makes it a knowing breaking of the rules.