Everything is relative; so, a statement such as "BitUSD is shooting up", really does need to suggest relative to what.
The dollar looks a little stronger relative to certain other currencies but that'll change.
The marketcap for bitUSD looks the same as it has for a while. BTC is falling because of ?noob merchants like Microsoft dumping into fiat or some other reason - perhaps there are not enough new buyers atm to keep up with miners.. and people have more reason to buy Bitcoin2.0 like BitShares; CounterParty; MaidSafe; etc, than ever hold BTC.