This has nothing to do with my post but anyway I think are asking why the SBD rate is above $1 (because it is not clear)? I think the most likely explanation is supply and demand.
Right now the demand for SBD is greater than the supply. Therefore the price is higher than $1. It is simple economics.
There is a limit to how much the Steem witnesses can modify the price given that it trades on external markets.
A number of solutions have been discussed to restore the peg. Have a search around Steemit and you should find them.