It could be faced out. How hard or if near impossible this is however, I do not know.

1 First of all we would need to stop giving rewards in SBD.
2 Next step would be to let the price of SBD stand completely on its own.
3 Then, as per our previousy designed automation, the transactions would be dropped or relabeled and transfered onto a new chain if that was considered preferable.

The order and execution could be very important, or else some might become tempted to keep it on chain in hopes that the price will keep rising.

Prior to doing any of the above an announcement would have to be made of course.

No, I have no idea where the SBD price is going. There's a lot of drift upwards, I'm sure, but it can also return to $1 and less very fast.

But the problems discussed here stem from volatility itself. Not that it is currently trading above or below USD.