I was mining and I see this guy mine down, then FLY up. I thought it was an animation glitch, so I ignored it.
I go back to my castle, half of the roof is missing the left side to the second floor is missing, too. As I was repairing it, Riz rejoined in the area that my castle was damaged. I told him to get the fuck away from my castle, and he jumped down onto grass about 300-400 blocks below and did not die. I accused him of hacking, then he flew up to my castle, and started to instantly break it again. That's when Tendy switched factions and killed this shithead.
Fucking ban. Right now. Right the fuck now. I spent two fucking days on that castle morning-night. Get him the fuck out. Hacking POS.