Murphy pulled something similar for the Brewers, but the guy on third got hung out to dry. I get the logic behind WANTING a bunt, but wanting a bunt and having players who can reliably execute it are two different things.
I find it impossible to believe that such a bunt attempt has a higher expected success rate than letting the guy swing the bat. I think MLB managers outsmart themselves a lot with the bunt, especially in the playoffs. Plus, even with a halfway successful bunt with a guy on 3rd, so many other things have to go right... the defense has to misplay it, the runner has to read it perfectly, etc.
"Hope baseball". A SAC fly or a slow grounder takes the "hope" out of the equation.