Is it against ToS (or whatever) to...

Your account is 100% Nexon's Property. They don't need a reason.

WE HAVE A WINRAR!

Nexon actually does need a reason, but the fact that the account is their property in the entirety is reason enough.

Edit: I hope you're not referring to me as a troll. It would be the 2nd time I've been accused of that on this forum, neither time was I attempting to "troll".
Trust me, when I start trolling, you'll know.