Flight manual States no aerobatic flight, which is flight above a bank angle of 60* or any abrupt inputs not necessary to the flight, i didnt see any other aircraft he was trying to dodge so hes either hallucinating or hooning.
MAP limits change depending on the weather, and have to be worked out at the beggining of the flight, theyre not always 26", and he goes way over that in the video.
I might also mention that you notice a roll to the right at about the 3 minute mark (while he is diving) this is incipient to mast bumping, if you watch his cyclic you see he counters this with a quick left cyclic which doesnt do anything until he pulls back on the stick. I think this is an excellent video to show a few students regarding several things they might regard as 'concepts' rather then guarantees . The left cyclic shows that this pilots training is totally inadequate and i wouldnt be surprised if he doesnt think he did anything wrong the whole flight.
Doors off + no seatbelt + low G = head >desk
also vne doors off = 100kts, clearly exceeded