Comments said he lived.
I know two guys who cut the top they were tied into, both good to excellent tree guys, both lived.
The first guy looked up as the top was starting to go and saw his rope up there and said to himself, "this is going to hurt". He held on and furiously slacked his taut line hitch and was able to let the rope run thru his hitch with the falling top.
The other guy was the Ninja. He stayed tied into the top to aid in making the face cut because the top was growing at a hard angle and positioning was difficult. I was the groundie running ropes, neither of us noticed the impending issue despite a calm, relaxed work pace. So he started the back cut forgetting he was still tied in high. As the top started to go over I saw the problem and held the let down rope tight to avert disaster. Being the ninja, he held on and was also lanyarded in so he was not hurt at all, just surprised and maybe a little embarrassed.