Those who play the Pharisee Card hope to dismiss
Christians like you and me as ultra-conservative doctrinal
purists with no love for the lost. But like a fifth Ace up the
sleeve, the Pharisee Card is a cheat. Those who play it
ignore the real errors of the real Pharisees. They wrongly
apply the name to those who stand in the way of false
teaching, compromising change and a watered-down gospel.
In the end, The Pharisee Card amounts to nothing more than
name-calling. And, like the Race or Gender Cards are in
politics, in the Church, the Pharisee Card is always the sign
of a losing hand.
See more from Pr. Wilken here.
Balaam's Ass 
It’s mainly a shortcut to thinking. I meet very few people who actually know rhetoric or even basic analytical thought. “Pharisee” is just one more in a list of “buzz words for the ignorant”.
I like to ask people to “explain what you mean”. That’s when the sputtering and hate speech comes out (to say nothing of the lack of understanding).
Often times the people that hate the more traditional, conservative Christians, are the most fascist, hate-mongers ever. They are just “popular” right now, so public opinion gives them their blessing. (See: Ephesians 4:14-16)
I’ve been called a Pharisee many times, but I don’t mind. At least I know I have struck a chord within the one who calls me such and will probably stir some new thinking along the way. Problem is, I have such a hard time growing a good Pharasaic beard.
I responded to a recent sermon on Three Classifications of People: Spiritual Christian, Carnal Christian and the Lost. You know where I am going. The premise was that no matter how much the “carnal christian” sinned he was still saved and could not lose his salvation. I emailed the pastor that there is no carnal christian for “if ye live after the flesh, ye shall die: but if ye through the Spirit do mortify the deeds of the body, ye shall live.” (Rom 8:13) and that many will say “Lord Lord” on that day and be damned because such teaching gave them false security. This Southern Baptist pastor wrote back that I was “a Pharisee and … you need to get a life”. Maybe my argument was too brief but I don’t think expounding more would have caused concern in him for the implications of his teaching. Ministers today are simply too proud to receive any correction. If they took Paul’s advice they’d read Ezekiel 33 carefully from which he quotes “I take you to record this day, that I am pure from the blood of all men.” (Acts 20:26).
Actually, I’m not sure where you’re going. I don’t believe “once saved, always saved.”
Tim