If you place an engineer's scale on the screen and assume tip-tip of the ears is 15" and with assumptions of future growth, then that is how I got my figures. Circumference is a crap shoot but I assumed 5, 3.75, 2, 1.5 for each beam. Heck of a buck you have there.
I only think he is 4 years old. If your surrounding hunting pressure is light then maybe you could let him walk another year. He is bigger than anything I have shot so he would be DRT at my place.
How big last year? bigger? smaller? same? Unless you're raisin' booners there you'd best have a go at that one if you see him in daylight. Your neighbors certainly will.
Your cam got busted, I had a big 15 point nt a few years ago do the same thing on a wore out trail, 2 pics of him staring at the glowing 1-40 1 min. apart then never again on that trail. Had 15-20 more of him on a high mounted homebrew cam, just not in the daytime.