There's no shorting in OTC. The $2.50/share collateral discourages that plus hardly any brokers will loan out shares.
There might be overseas shorts but probably not enough to move the stock significantly.
The Finra short report is not retail shorting. It's incomplete transactions between market makers who haven't settled, most often these parties cover within 2-3 days.
The rise and fall of stocks down here always, always, always hinges on a few insiders, they alone determine when the pump phase ends.