He did a very nice job. Hope if I'm ever in that situation, I do as well.
Some of the guys in singles use flaps; it holds more of the wing off the ground. In the multi-the props have less ground clearance.
It seems good he shut down the engines once he had the runway made, even if not necessary to save an engine tear-down. Just getting them off and shutting of the electronics and fuel would be great if one could do all that. First and foremost would be to put it in the center as slow as possible as he did.
There was some thinking that grass would be easier on the plane, but as has been said, a rut, hole, bump or whatever could spin or flip the plane; it could also change the plane's direction to something undesired; so, most of what I hear now is big paved runway with services if possible.
One of our guys gear upped a 172 RG here in our flying club couple years ago (with an instructor on board). The crew retrieving the plane from the runway did a lot of damage. The put a GP strap on the prop and pulled the plane up onto a flat bed. Pulled several engine mounts out; damaged the firewall and some other things that weren't necessary. So, if it's your plane, and you have a choice, consider who you call to clear the runway.
Best,
Dave