In order, how does Andy, then Dave, then Jim, attempt to deal with the crisis caused by the dog?

They all three run away!

Dave glanced over his shoulder to see how the chops were doing—and bolted. He explained afterwards that he thought he heard the pan spluttering extra, and looked to see if the chops were burning. Jim Bently looked behind and bolted after Dave. Andy stood stock-still, staring after them.

Andy’s legs started with a jolt; his legs started before his brain did, and he made after Dave and Jim. And the dog followed Andy.