"delaney?...your guess?"
Hmmm, we have a miscommunication here. DLNY was NOT shorting IMSC for its own account, if that's what you think I was suggesting. On the Pinks, market makers virtually always simply represent the orders of buyers and sellers.
There have been about 10-12 people posting here regularly the past few days, and it appears to me that several of us have pretty much figured out what has been going on with the trading. It is aggravating for longs, but not all that unusual. I suggest you try to weigh the competing theories and see who you think is correct. Then, if the 5-6 of us are right, the answer will be forthcoming within a few days.
I will just ask you one thing. When (and why) would your hypothetical competitor have purchased the hundreds of thousands of shares with which it hit the bids? That's real shares being sold, not short selling.