what do you mean "is his MO"? He had an ASK that essentially took him out of the game, and then jumped down the second best ASK. what's so abnormal about that?
HDSN also makes a market on many many stocks so to assume he is diluting may not be correct. HDSN has also had a presence on the bid. Ungagging the T/A would go a long ways in developing trust with shareholders tho. Email the CEO with your concerns, I have.
News 
Market Data 
Discover 
