I suppose it would be scored a bunt and a couple errors. But I've seen where some guys have hit a ball deep in the outfield and the outfielder misplayed it and instead of scoring it as an error it was scored as an inside-the-park home run.
What prompted me to ask this is that I had a dream where this happened. The batter popped a bunt up to the pitcher who mishandled it by having it bounce off the heel of his glove causing it to roll past the catcher. The base runner saw this and ran to 2nd base. The catcher hurriedly threw past the 2nd baseman and the ball went between the outfielders allowing the runner to come home.
What prompted me to ask this is that I had a dream where this happened. The batter popped a bunt up to the pitcher who mishandled it by having it bounce off the heel of his glove causing it to roll past the catcher. The base runner saw this and ran to 2nd base. The catcher hurriedly threw past the 2nd baseman and the ball went between the outfielders allowing the runner to come home.