Well how did it turn out, James? I was quite busy with supper and so full and wooped that I hit the couch right after clean-up. Guy Fiero is hosting tailgating comps but I fell asleep in no time.
Actually, it was Wicker chicken, which is just a commercial vinegar-based marinade/baste that folks grill chicken with, just like you do with the roadside recipe. They turned out just fine, but the pleasant surprise was my wings.
I wouldn't have taken the butt out of the foil to crisp up the bark at that low a temp, but I'm no pro, that's for sure. Just that my experiences cooking butts at higher temps in foil have ended up with 200*+ finishes. It's all about tenderness though, not finished temp. and good bark is icing on the cake if you got it, not the main event. Sure it turned out fine.