IMHO, the block is so weak as to be completely ineffective. It does not alter the flyer's momentum or path in the least. He would have buzzed and/or contacted the receiver with or without that inconsequential contact. KCI.
But, the B definitely quits officiating. He's got to get his attention back to the action of, and around, the ball. And a little hustle - at the appropriate time - would definitely be in order.