It was a quartering forward shot and not the best angle to take. His bow appears to be a Matthers and has lots of power to get through bone. But why risk a bad angle shot?
The moose was walking stiff legged and rocking back & forth...this means he is sizeing you up because you've just challanged him & he's about to charge!!!
Your hunting partner is 20-30 yards behinde you and is the one who calls the moose close with challeng calls, the shooter is the one to take the moose as it comes to the caller!
The shooter should have started to make some non agressive noise (like talking to the moose), to get the moose out of its agressive trance like stance and make it realize your not another rival moose, IMHO!!!
Once the moose reassesed its situation (fight or flight), it would have likely turned away and offered a "quartering away shot" for the hunter to take.
Getting a moose that close isn't the danger, its the mooses attention at the time the shot is taken that you should worry about! It should be on the caller & not the shooter!
The shooter in this vid is very luckey he didn't get killed. As far as the moose, the arrow entered at a bad angle in front (lots of bone etc), and may have only got one lung..plus it appeared to be a high shot.
I'll have to look at the vid again though.
When bow hunting, you MUST make sure of your shot placement for a quick clean, humane kill, out of respect for the animal your hunting!
HC