That bugger looks like he's been on groceries for about 2 months! Is there a ranch close by with grain troughs? Something other than just natural feed? He's mighty fat for a free ranger!
OT, I've taken many hogs without death throws. From the sounds of it, Falcon disconnected the brain stem perfectly. Even with head shots, if you don't disconnect the brain stem, there will still be some "signals" going out to the muscles. I remember one big old boar I hit with a 350gr Interlock out of my .458 SOCOM. Little over 85% of brain matter was literally removed from the scull and that bugger thrashed in a circle for 20+ seconds! Caught the next big old sow just under and behind the ear and not even a shudder! Was the real "bang flop"!