Probably left a nice gouge down the runway as well.
I'm surprised they didn't reverse thrust as soon as the rear wheels were down.
Just a wild guess, but without nosewheel steering, you really don't want to jump on the thrust reversers, you may end up in the dirt. Long, controlled rollout slowing with the wheel brakes until you are slow enough to ensure you will stop in a straight line.
I wish I could find the pictures, I could show you what the mainmounts on a P3 look like if you land with the parking brakes set. After a couple of incidents, ensuring they didn't get set inflight was part of the approach checklist.
bob