Yes, two years ago, on the Friday before the trial, Riggs held on to Josh for 15 minutes. He fell asleep multiple times, but as soon as Josh twitched, he'd wake up and clamp down! lol
I finally pried his mouth open with my hands and carried him off the field. He's a very good boy, and with the exception of giving up decoys, he's obedient 99% of the time.
The photo you are thinking of is him hanging off of Shelden's arm, with his feet off of the ground, between Shelden and me. (He slipped the jacket for that one.) Actually, that bite was the last one Riggs had until last Saturday.