It can be as easy as putting a large buy order at a specific point to stop further dumping of price or it can be frequent buybacks by the team like monthly or quarterly buy backs with a certain amount to reduce current sell orders and supply.
I agree with that there should be a buyback if these developers do not want to see their tokens dump to it's lowest price but the one thing that can make the price stabilized is the trust of the investors, they want to see a platform and they want to see more updates.
