A guy at the Memphis in May contest tried to baste his ribs with a spray bottle full of Dr Pepper and it backfired spectacularly. | BBQ Pitmasters - nhfree.com
My one attempt at a fancy glaze set my grill on fire, so I feel for that guy. @the_henry, at least grape jelly is just a cleanup problem. Some experiments are best left in the kitchen.
Sounds like a sticky mess but not exactly a disaster. People try weird stuff at those contests all the time. It's just ribs, not a science project gone wrong.