There was a guy from my old hall who went off to MTS. He was an MS/Pioneer who had enormous self-esteem issues and was a bit of a wreck. He was a nobody in the real world. Nevertheless, he knew how to play the system. He applied to MTS and was accepted. When he returned he tried to use his influence to get back at elders who had passed him over for an elder slot. He made sure everybody knew he'd studied the top secret elders book while he was there.
He was sent off to an assignment in a rural part of the U.S. and didn't last very long. He was the type who wanted the title but didn't want to put in the work. I started fading around that time, but I heard there were one or two more assignments he found ways of getting out of. Eventually I lost touch with almost everyone I knew at the hall. I talked to an active Witness a year or two ago and he told me the MTS grad had eventually been disfellowshipped. Not sure what for, though.