Its because you guys were abusing a glitch that obviously needs to be enforced better. Just because it doesn't specify a certain glitch, its well known across all Unturned servers that abusing a glitch isn't allowed but you guys continued tot use it.
**Staff harassment is defined as continual offences against a staff member. You are allowed to disagree with them or curse against them in a jokingly manner, but note that if a staff member warns you and you do not listen you may be punished.
He did in fact warn you to stop so in case you don't know where all the rules are posted here is a link for yah.