Garvin strikes me as an acquisition just to fuck with NWA/WCW. Or maybe as a favor to one of the other Crockett guys. (Or maybe Savage from the ICW days?)
*Checks notes*
The WON says Garvin was asked to lose matches at house shows (he was feuding with Dusty) in August 88. He was among the many who had payroll issues as JCP went bankrupt in the spring (talent had been bailing before the bottom fell out anyway). He told Crockett no money, no jobbing.
Hilariously Tim Horner of all people had the same complaint and quit too.
Garvin went on to work AWA and WWC for sure as he won belts in both places. Shockingly, he came back to the AWA to job the TV title to Greg Gagne AFTER already being under WWF contract. Garvin has to have some major integrity. Vince was actively trying to ruin the AWA joint PPV that match was occuring on.
Garvin was to team with Al Perez vs. Dusty and Murdoch at the next Clash. That turned into Dusty vs Sullivan instead (with Gary Hart being pinned IIRC)
Edit: Bonus info from my notes: Garvin had an issue with Crockett and then booker George Scott in JCP during the late 70s. This ended with Garvin attempting to attack them in a locker room. He was working for Ole when JCP swallowed up the shell of the Georgia area promotion in the spring of 1985. Garvin had no desire to work for the Crocketts, but Dusty pitched him a good role and Garvin made up with Jim Crockett.