Calvinist or not, I have never liked the phrase "the Devil made me do it". Because it ain't so. The Devil can't force anyone to do anything. Tempt, sure. Those in his power, maybe a little more... but making someone, especially some Christian, actually do something that person doesn't want to do? I don't think so...
Oh I agree completely, we're completely responsible for our own choices, but he can sure encourage other folks to make OUR lives miserable because of THEIR stupid choices! ;o)