Stability is stability. A stablecoin that is not stable has no use case.
If you're referring to the price on coinmarketcap you should know that it's very easy to manipulate and never really accurate since most of the reported volume comes from 1 very unreliable exchange. More accurate prices come off our own internal market.
Besides, as long as we don't hit the haircut HBD is always convertible to $1 worth of HIVE.