I don't see that at all. GB and SM were buyers on market leading...

I don't see that at all.
GB and SM were buyers on market leading up to the AGM, thus providing some positive liquidity, albeit in small volumes. I don't think anyone seriously believes they are withholding information to keep the share price depressed. Recent announcements show decent progress being made on multiple fronts.
I don't have time to analyse the intraday trading of SAU stock, but it does seem like someone is walking this down. If so, I would say it is someone outside of the company.

SAU is currently active on so many fronts, and we are able to do this with previous cashflow. Any solid progress on either Cannon UG, Glandore, Lake consols, or even Gubong could send this flying. If one (or more) of the people Simon spoke to in Honkers decides that this is undervalued and buys on market, this could also fly.