I had a pro level rider look at my video of the front losing grip and he put some of the blame on the tires, but mostly on my lousy riding as evidenced by my accelerating while adding lean angle.@Pard - Depending on how the road was constructed and the amount of travel it sees, the road might be covered with a lot of super tiny rocks. Don't think that's the case here, but sometimes there are hidden dips in the road; occurring at or near the apex of a corner. Fortunately it looks like you still had a lot of reserve. As long as one doesn't overreact, under those conditions traction should recover and the suspension will settle out.
Ideally, only accelerate when starting to remove lean angle, or at least at stable steady lean, otherwise the front contact patch is compromised by the weight shifting aft under acceleration, and traction can be lost.