I really hate these kind of threads, and I try not to open label someone a cheater or thief unless it crosses the line. Sometimes however, some thieves and cheaters are smart, but some are ... not.
Vladster ninja lotted a Garrison item -- Military Pick during Garrison on Sunday, and was removed from the Pies LS. He also gained notoriety within Pies being leeching and expect everyone to held his hand. Apparently he has own LS (he is the leader!), so I advice people not to join his LS nor assist with him with anything.
His behavior in Pies and the fact he decides to steal something like a Military Pick (which itself not extremely valuable and very short sighted decide to piss so many people for that) shows him not only being a leech or thief, but not... specifically wise. If you happen to stumble upon him doing some sort of missions or group events, well... not sure I will say what to expect all.