Looks like he may have had someone pick him up and give him a ride!
Yep, turns out one of the other riders stopped and checked on him and he was having some medical issues (food poisoning by the sounds of it). Tyler flagged down some help and he got a ride back to Boulder where he'll rest and recover. Pretty hot, dry, and desolate in that area so its great to see the riders watching out for each other. Thank you Tyler!