while trying to figure out how someone could do this i found a way to somewhat bypass the claim, i was testing with someone, we did /rtp and he claimed a random piece of land where nothing was built and i didnt have access to, i went to the corner of it and launched a mining dynamite from the mod cyclic, it broke blocks inside the claim, then i sit right on the edge of the claim, looked up and launched another one to get more in the middle of the claim and not just the side, and it worked so im guessing thats how someone griefed this, the person i tested this with is Kawaii_Divinity and i wasnt at his real base and nothing was built where he claimed the place, we both agreed to doing this for test purposes.