Making a "STRICTLY" -EV move is terrible, and not what Greenstein would be doing. For one, if you are misleading tough players you see regularly, inducing them to think a certain way and understanding exactly what you are doing, that isn't -EV. On top of that, there's the possibility that this weird, seemingly bad play might pick up the pot as well.
I'd encourage everyone to head over to Mid-High Stakes LHE and check out
this thread, mostly towards the end. It's about a high stakes player (one of many) who makes occasional plays that appears simply bad, and certainly unorthodox. Yet he is a significant winner over a large sample, and there is some interesting discussion on how that might be. It's important to note, also, that the bigger online games get, the more and more they feature regular players who are tough and cognizant at the table.