The distinction I would make between your comment and "goddamnit" is that while I don't particularly like either one, "goddamnit" doesn't actively mock God/people's religious beliefs about God. On the other hand "Christ on a stick" certainly seems like going out of one's way to mock the crucifixion/people with religious attachment to the crucifixion.
Having thought it over more, i agree that it is trivializing of the crucifixion. However this probably isn't the best venue for ruminating on the notions of Christian symbolism & semiotics.
The distinction I would make between your comment and "goddamnit" is that while I don't particularly like either one, "goddamnit" doesn't actively mock God/people's religious beliefs about God. On the other hand "Christ on a stick" certainly seems like going out of one's way to mock the crucifixion/people with religious attachment to the crucifixion.
Does that help explain where I'm coming from?