Call me gauche but it didn't look like a 'tank slapper' to me
Having ridden erm what are now termed 'classic' bikes and as Steppers said, tankslappers hurt your thumbs
High frequency uncontrollable movement from lock to lock that takes the bars out of your hands whether you like it or not.
I'm not saying that it wouldn't have been tricky to control but the rear slid out and rather than committing to getting the bike back on some sort of line he opted for the Bear Grylls off road option no doubt transfixed by his apparent lack of front brakes
He didn't need to brake, his speed was not excessive IMHO, the corner was not steep but sweeping he just (understandably) cacked his pants and bailed out into what turned out to be a much worse, rocky, hard, unforgiving situation.
In true internet stylee he hints at various mechanical failure scenarios which don't really make sense IMHO but at least might absolve the rider from some 'blame'.
There may be a load of other contributory factors as previously posted, if it had happened to me it would definitely have invoked the half a crown sixpence sphincter

Having ridden erm what are now termed 'classic' bikes and as Steppers said, tankslappers hurt your thumbs

High frequency uncontrollable movement from lock to lock that takes the bars out of your hands whether you like it or not.
I'm not saying that it wouldn't have been tricky to control but the rear slid out and rather than committing to getting the bike back on some sort of line he opted for the Bear Grylls off road option no doubt transfixed by his apparent lack of front brakes

He didn't need to brake, his speed was not excessive IMHO, the corner was not steep but sweeping he just (understandably) cacked his pants and bailed out into what turned out to be a much worse, rocky, hard, unforgiving situation.
In true internet stylee he hints at various mechanical failure scenarios which don't really make sense IMHO but at least might absolve the rider from some 'blame'.
There may be a load of other contributory factors as previously posted, if it had happened to me it would definitely have invoked the half a crown sixpence sphincter