He was using polyrhythms. A drummer this good doesn't make mistakes like that. Especially when he has probably practised this over and over again before this show. Great show Baard! You're one crazy-ass drummer :D
My autistic brother who can't talk and doesn't know too much about the world loves your music. He was clapping after every video of yours, and he got really excited. You're really talented, keep it up!
Didn't practice? Do you know that from 0:40 he was playing triples in the bass drum and playing a kind of 3 over 2 in the hands while accenting the half time of the triplets beat??????????!!!!!!!!!!!!
I thought it sounded pretty fucking awesome tbh, he was playing drums around the beat as opposed to on it. It was really well done, particularly the accenting on the ride cymbal.
Improvisation in his comment above suggest he didn't practice. I guess it is some technique, call it what you will but 0:40 to about 1:00 whatever you call it doesn't sound very good. Before 0:40 and after 1:00 though, MIND BLOWN. Really nice.