You Said...Scary, you are using a passive construction: "will be held down". Could you please explain who will be acting to hold the share price down and how?
I'm no expert but here's what Scary may be referring to...
A market-maker's job is to make a market for the buying/selling of shares (you can find lots about market-makers online). They establish public bids and asks for stocks about which they know a lot, and they know a lot about potential customers for the markets they make - i.e., each set of bids/asks represents a market. They often hold actual shares and use them to make the market flow/move.
Here's my interpretation of what likely can happen.....and I'm happy to be wrong...but at least I will be better informed.
If the market maker has enough shares (or access to enough shares) and can consistently make lower and lower markets (sets of bids and asks) because no one else is in the market on a given day/hour, and if they know that there will be demand for such shares, they can move the price down quite easily.