I think some Calvinists themselves have muddied the issue, though, for non-Calvinists — particularly those who've recently come to see the Biblical doctrines of grace. I've had brotherly arguments with a fellow at church who will not use the word "decision." This same earnest brother amicably challenged me once when I preached that, if my hearers refused to come to Christ, the constraint is in themselves, not in God. Nor is this brother at all alone in that.
a. "unresolved sin" on the part of the preacher of the word? Or it is "your fault" for not preaching a perfect sermon and not being "good enough" to personally influence the hearers?
b. Man's depravity making man an enemy of God unless and until the Lord steps in and changes the heart of man?
My preference is for B for this reason: Christ Himself preached and had people turn from Him in droves when He was on the earth.
Merry Christmas Dan!