nice [email protected], page-12

They can borrow from the most likely stakeholder in who's interest it is to keep the price low IMO.
Stakeholders do not want to do this themselves and commission other entities specialised in this, who can keep turning the stock over for a long time, while making money in the mean time.
The MM's on AIM are experts in this. It is like day trading with yourself and in the process getting the few retail holders who are trading with them shafted.