I didn't use the term, BTW. I don't think you're a fatal heretic. I think you will have the joy of spending eternity praising God along with John Calvin among a myriad of others.
I have probably read as many books that present theology with which I disagree as those whose views I hold. I was the one who pointed you to Open Theism and Greg Boyd. I poinsted Grammar to Finney's Systematic Theology. In both cases I thought you might enjoy the works of your kindred spirits.
You were indeed. And I have read the contra views of John Piper in your honor.