The only advice we can give is that you get a sitter or that you're extremely careful logging in from wherever you are. Public/hotel/college IPs always carry with them a certain risk.
Let me add something: I think most players by now (at least I hope this is the case) are aware of the fact that "XP Farming"/mock war is a violation and that it will be punished. In a normal case the punishment for that violation is the removal of any experience gained in the illegitimate war. When multiple violations occur by the same nation (for example a nation having 3-4 illegitimate wars, or more) it logically follows that the punishment will be more severe.
The option to disable experience is (currently at least) only an option for the attacker. It can only be done at the beginning of a war (in the declaration) and it turns it off experience for both sides of the war
Disable experience and you're allowed to have as many war games/competitions as you want.
Since the question asked has been answered, I'll direct further comments/suggestions to this thread.
The best way to avoid getting deleted/banned is to not be on the same network.
Since I don't know the policies of their college or how their network is set up it's hard to give any more detailed answer to this question.
And for months, maybe years, the Moderation staff has been reminding players where and how it is appropriate to raise concerns about the game/admin/moderators/whatever.
This is not that place.
Here's admin's post again:
Thread closed.