Well 1), entirely possible something along these lines happened a few months ago, and Cousins obviously would not have appreciated it. 2) there was always the chance that was a reference to PDA, or I suppose some other leaker; and 3) lastly, remember Cuz's eternal war with the media. "snake in the grass" could be a reference to media members, or even lakers, trying to sneak about and stir up trouble.
With Cuz's twitter crypticness you can never know for 100% sure. He never explains himself.