So why did he disappear and the MMG situation didn't work out for him?
IIRC his biggest song "Pacman" was on a MMG album, not his album and by the time he could drop an album his buzz was already dead. He also never got any real features outside of MMG so if you wasn't an underground follower or MMG head you wouldn't have heard of him. The first time outside of Pacman any average follower would've heard Pill is Self Made and at that time Meek Mill was buzzing like crazy so everyone else except Gunplay was overshadowed on it.
Just bad timing and arguably a bad fit for him, signing to a group where everyone else in the group is 50x bigger than him. Dude mightve enjoyed those few lil checks he got off Self Made and decided to call it a career.