People don't seem to get what the issue is.
HDMI 1.4 and the frame packed format of Blu-ray does not add data rates beyond what HDMI 1.3 already delivered.
But, it introduces a brand new resolution.
This is the key issue with 3D. It's not that the receiver can't handle the bandwidth, it is that the chips which process video, and are NOT firmware upgradable, are completely incapable of recognizing the resolution.
Now, cheaper receivers which do not touch the video, but pass it through, may actually do a better job with 3D because they don't have video processing.
But, those receivers which apply a GUI over the image, are actively processing the incoming video and must recognize it.
While a very limited few may offer firmware upgradability to the graphics processing engine which drives things, most do not. It's an expensive feature to offer, and generally it is direct hardware accelleration on the chips which are purpose built to handle standard video resolutions which drives the ship.
This isn't a workaround thing, it's just a 'you can't have it' thing.
So, you go to a player with dual HDMI outputs and you are good to go! Maybe.