I'm not sure what you are talking about, but the objective of the SPS:DEC mechanism is not to pump any token. DEC is meant to be the transactional token and should be worth some % of peg, the game will honor the value of this through the distribution of their products (like packs for 4000 DEC for instance).
Any overflow of demand that requires more DEC will then require SPS to be burned to get more DEC. So there should be no "inflation" of DEC like the past (assuming the market is rational). In other words, players will only burn SPS when they NEED DEC. If they don't need DEC then they won't burn SPS.
When DEC gets to peg that doesn't mean it will stay there either. The point of this whole economic shift was not to pump anything. The point was to steer excessive demand into the SPS token, and trying to keep the DEC token more stable and backed by the company's products at $0.001.
I'm happy to discuss further if you like, you can DM me on discord anytime.