This is a tough one, i'm leaning slightly w the consensus you go. A smart 3b doesnt give a rats about that dude on third unless its a really slow chopper/ a ball he has to come in on. The runner goes and u have the chance he brainfarts and airmails the ball somewhere, or he makes the play at the plate and u got two runners on. Or the very small chance he goes home quick, and the runner on third gets in a pickle and lets the two others maybe advance another base.
To play devils advocate though, from a pitchers perspective: say that runner on third stays and the DP is turned. Even knowing the runner on third means absolutely nothing, and then going into the windup, there is something nice about being up one still with nobody on and you only need one out. Like a clean slate to get one guy (with some wiggle room still). For some, that guy on guy on third is a reminder they are in trouble, even as much as you tell yourself he means nothing.
I still say you go though.