>I don't think so. A particle, or group of gas atoms, gets heated up, and will eventually emit thermal radiation. There is no reason why it should "remember" where the energy came from in the first place.

It is not that the particle "remembers" where the energy came from, it is that the exchange occurs that quickly (nanoseconds) that even if the particle of dust was rapidly rotating, it would only rotate maybe a couple of degrees before unloading it's excess energy back into the ether so that it can return to original state or as close to it as possible (remember the Entropic process).

The original light can be reflected as either light or after being aborbed, re-emmitted as black body radiation (IR), also remember that we are talking about deep space here which is about 4 degrees Kelvin or less, if what you state was correct, with this continuous stream (24/7) of light energy being absorbed and then taking some time to re-emmit the energy it would be a lot warmer than 4 deg Kelvin.