Not in a consumer-usable form, not exactly anyway... The closest things available now won't work with hdmi, only sdi. There are options available that will serve the purpose - boxes that will input 3d and output either left or right, so two of them plus a splitter would function as a demultiplexer. There's one available now: radiancemini 3d - but at $1300 each, you're looking at $2600 plus the hdmi splitter (another $50 or something). It has some awesome processing abilities on top of that, though.
Optoma is about to release the 3d-xl that will also split out the left or right, and it's more reasonable at somewhere around $400 (so still close to $800 since you'd need two).