Another method of pumping is buying HBD (or Hive) with TRON (TRX) or another coin not being traded often. Jus t look at the spike in SBD. That said most of the peopek with hive and HBD in Venezuela (for example) but also those with an investment view cheer when this is happening as on paper their wallet value goes up and a lot.
All in all I see no reason to be worried about SBD going up and up further. Why was a "pegged" coin set up anyway ?
A stable coin was built-in to Hive to allow for easy commerce, as described in more depth in my post. It actually is used for this purpose, and not only by the proposal system. For example, @hivefest tickets are paid for with HBD.