Raiders Cornerback Flagged

What the hell? An Oakland Raiders corner back flagged for getting on his knees, and praying for god after he caught an interception and made the touch down! After picking off a Matt Schaub pass in the end zone, Oakland Raiders corner back Chris Johnson celebrated by dropping to his knees and raising his arms in triumph, and was flagged for it. He was instantly flagged for an unsportsmanlike conduct penalty for excessive celebration. So is it wrong to pray for your god after like a miracle happened?  NFL owners  voted three years ago to restrict celebrations, but some people still dance and celebrate when they make a touch down and get no penalty for it. But when someone gets on their knees, and prays for the religion they believe in its against the rules (WTF)!?! I say get rid of this no celebration rule its just ridicules.