The photos aren't grounds for EMERGENCY custody proceedings. And keep in mind that the very FIRST words out of his or his attorney's mouth will be: a photo can't "show" that someone was drunk. Drinking in and of itself isn't illegal, and unless there has been some PROOF that his drinking has CAUSED some problem (ie the child being neglected or injured, or your ex having arrests and convictions for DUI), this isn't going to become the issue for the court that you're hoping, and most certainly not on an emergency basis.

