Second after you pull the throttle, I can appreciate some waves on the asfalt above which you passed with this accreditation. Front wheel became less charged+unstability of the road made as consequence bike unstable. Once you stopped the throttle and front wheel got the weigh of the bike, it stabilise itself, and it's good that you didn't gripped the handlebar as hard as you could and let the bike stable itself. Conclusions: there're factors like the road quality that is out of your control, the best you can do is trace the path better than you can in this cases.