Via ESPN Boston:

"I didn't send anything to hurt the reputation of anyone on the New England Patriots or on behalf of Robert Kraft," said Gronkowski. "That's all, just a simple picture, that's all. From here on out, I'm just here to talk about the Pittsburgh Steelers and the big game this weekend."

Yes, because no New England Patriot would do anything to embarrass the team with a camera (or another camera).

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• Rob Gronkowski, Hanging Out With Porn Star Bibi Jones, Looks Like He's Enjoying His Bye Week
• Rob Gronkowski's Porn Star Ladyfriend Says She Humped Dan Uggla And Assorted Married Athletes

Gronkowski apologizes for pics [ESPN Boston]