The two-way SBD peg at $1 is just something the witnesses are considering so it may or may not happen. However, if the two-way peg does go into effect then SBD would likely go to and stay pretty close to $1 so if you think the proposed two-way SBD peg is likely to be implemented, then it would make sense to sell SBD now before it goes to $1. However, even if they don't implement the SBD peg there are lots of reasons to think SBD will go back down to $1 anyway so if I was holding a lot of SBD right now I would probably be in a hurry to sell it at its current price of $3.