>friend with trust places a baseplate>you build a house on it>your friend, who went afk or something didnt build anything else>friend ctrl+z's>your whole house is destroyed
or someone you just met and you trust could do the same thing, except intentally.
That would explain it. If I recall Tango hosts cityRP's
*cry*Abandoning thread now..
But wouldn't the person who tried to Ctrl Z, it not working, because the brick would sense that it has other bricks on it. It would be like trying to hammer the middle of a 1x1 tower.