Yeah, definitely an oopsie moment. He couldn't have been watching the bucket at that late stage of the termination because he kept descending for a while after the bucket went into the trees...the 212 is not an easy platform to long-line from because you really need to get in an awkward seated position to observe the line. I note also the co-pilot door was on and it's hard to pick from the video whether that door is fitted with a bubble window....