No...I think it might be seen as mocking the religious a little...but the guy didnt do it to get this response, so he is clear of conscience on that level. GOD looks at the heart...so I dont think he will be mocked, nor will he take as a form of piety that position for the sake of that position.
In essence it was probably something mean towards the guy himself. But he seems to have the right attitude about it. It doesnt offend him, He means it when he does it, and if its exposure causes anyone to really think then all the better.