Harry heard that feminine note in her voice and turned, wincing as he realized her face was going a little. . . less bearded. And also a good bit fuzzier. Perfect.
"Just get out of sight," he told Hermione, his voice an odd mix of the Indian bloke's and his own as he skittered behind the Church, dragging Hermione with him, as she looked more than little stunned. He dug out his wand - and his glasses, shoving them on his face a bit lopsidedly.
"No time to get anywhere else. Just go on. Pop back to Hogsmeade," he told Hermione. Ron seemed to have caught up to what was going on already, but Harry wasn't going anywhere until Hermione was clear. Because she must have just sussed out what Harry had started to figure out as soon as the shouting started.