Tim McGraw talked to ET Canada about that "slap" that he gave to a crazy fan while he was onstage. She had latched on to his jeans and he reached out and whacked her hair.

If you missed the video, it's here>>>http://www.991wqik.com/onair/jean-marie-53712/tim-mcgraw-slaps-woman-in-the-head-12578628/

Now Tim says that  "It happened in a split second, it was pure instinctive reaction, I think you just got to move on. Nobody feels good about it, but there's nothing that could be done about it".

The cops in Atlanta say that he was justified, and the fan hasn't said a word.