Saw it before on reddit, looks like the rear just kicked out on him and he panicked. Not sure if his tires were cold, if he just ham fisted mid turn or what. I'm surprised it wasn't worse based on how he went down.
Saw that yesterday, his bike really smacked that pole, he's f'n luckily he totally escaped and landed in tall grass apparently free of any sizable rocks. Disassembled the front-end in record time!! The cluster gauge speedo was funny to me for some reason.
All about body position and SRs there. He definitely wasn't leaned over at all which increased lean angle on the motorcycle itself, decreasing grip. Definitely crossed up. And it looks like, but I may be wrong since it is hard to tell, he fixated on the pole and drove himself right into it.
Glad he's okay. That's a great way to learn that lesson. Sucks to lose the bike, but always good to leave mostly unscathed, save his pride.