Exploiting Blunder

In this position White has just moved his dark-squared bishop to 1.Ba3, offering sacrifice, hoping to exploit Black's f7 weak point. Black takes the bishop 1...Qxa3. Is this a correct move?

Answer, highlight in between bracket:
[ yes, 2.Qxf7+ Kh8 3.Nd7 Nd8 4.Qxf8+ Qxf8 5.Nxf8 Bc8 and White's knight cannot escape, 0-1]