Do you mind if I ask you what a 5 point Calvinist is? It's a term I've never heard before.
Well, I'm not Orthodox Bagpiper, but I am kind of a bagpiper, so I'll take this, if he doesn't mind.
Calvinism is based around five points of faith, known by the acronym TULIP:
Perseverance of the Saints
Total Depravity says that when Adam sinned, his sin passed to all of his descendents, making them completely unable to seek God or look for Him. Even after Christ has come, they say, this condition still exists.
Unconditional Election is the belief that since man cannot choose to come to God of his own will (which is bound and held captive by sin), God has chosen those who will believe in Him from before the foundations of the world, not based on any merit that the elect may possess.
Limited Atonement says that although Christ's death was effective enough to save all of mankind, its effect is not imputed to all of mankind, but only to the elect.
Irresitible Grace teaches that since God is omnipotent, nothing He does can be thwarted. For that reason, the grace of God that is extended to the elect is powerful enough to save them, whether they want it or not (which, according to Calvinism, they won't want, because no one of his own will seeks after God).
Finally, the Perseverance of the Saints is the belief that since the grace of God is impossible to resist, the saints will continue in the grace that was given them and will never fall.
Now, naturally, there are a lot of things that are suspect with this doctrine. For instance, you aren't really able to know whether you're of the elect until you die, because regardless of how great a person is in the Church, if he falls away, he was not of the elect but was merely a surface Christian. In addition, this doctrine seems to anthropomorphize God by making Him work in time. Calvinists don't seem to be able to understand that God is outside of time, and, as such, sees all times as one eternal NOW. If that is the case, God is able to work all things at all times around what men decide to do, because for Him, it is eternally the moment of creation, and regardless of what decisions are made by men, He is able to rework all of creation according to His purpose. It's really hard for me to explain, but C.S. Lewis (who I seriously think was Orthodox at heart, by the way) does an excellent job in explaining this point of view in the second appendix to his book "Miracles".
Sorry for the long-winded-ness, but Calvinism gets me worked up, so long as I'm typing and not trying to talk about it. I'm a writer!!! I can't work without my books and my internet connection!