I've heard the same thing, however I don't know any way to verify whether its true or not....additionally I know some brokers won't accept a limit sell order of $10 for a stock trading for $1 or $2....it will generate a message saying the sell price is too much above the current price, or words to that effect.

And given the delivery failures I would assume that anyone with shares in a margin account, that they've already been loaned out in any case.  

I just hope we see at least similar price appreciation to what happened in May/June of 2018 when RVX started showing up on the Buy-In list....similar or better.  At the end of May, start of June in 2018 the PPS was in and around the $1.25 area....by Aug it was up over $3 and in Sept it touched over $4, and that's when BETonMACE was still a year+ away from any results.  

I'm not predicting the PPS will explode this coming week, but I do think the ingredients are there and that it could happen.