It is very appropriate for elders to question a pastor's teachings if they don't line up with Scripture.
Yes sir, it is. That's part of their job.
If a pastor won't listen and continues to preach error, then he should be asked to leave.
No, the elder(s) who can not come to an agreement with the pastor should leave, not the pastor. It's his church. It's his responsibility, not theirs. If the pastor truly is errant, let him fade away on his own.....or leave him to go entirely rouge and turn his church into another 'First Church of the Ear Tickling'. True believers won't attend that kind of church. Not for long anyway.
And just how does God "control the pastor"?
Yeah, I know.....imagine that...God controls the pastor?
But that's exactly the kind of question we often have to ask in this time in church history because of the lack of appointed and anointed and Spirit baptized pastors leading the church.
A pastor is expected to be the spiritual leader because he has the spiritual inside to God by virtue of a special calling, gifting, and empowerment by God through the Holy Spirit.
That's how God controls the pastor. But, yeah, I get it how we don't get that in this time in church history when the Baptism of the Holy Spirit has been relegated to an early church phenomenon only, and your pastor is simply the one who borrowed $100,000.00 to go to seminary and become a pastor/ lecturer.
What exactly is the "open church model," and where exactly does Paul say that we are to have that?
1 Corinthians 14:26-39 NASB
"When you assemble, each one has a psalm, has a teaching, has a revelation, has a tongue, has an interpretation. Let all things be done for edification.27If anyone speaks in a tongue, it should be by two or at the most three, and each in turn, and one must interpret; 28but if there is no interpreter, he must keep silent in the church; and let him speak to himself and to God. 29Let two or three prophets speak, and let the others pass judgment. 30But if a revelation is made to another who is seated, the first one must keep silent. 31For you can all prophesy one by one, so that all may learn and all may be exhorted; 32and the spirits of prophets are subject to prophets; 33for God is not a God of confusion but of peace, as in all the churches of the saints.
34The women are to keep silent in the churches; for they are not permitted to speak, but are to subject themselves, just as the Law also says. 35If they desire to learn anything, let them ask their own husbands at home; for it is improper for a woman to speak in church. 36Was it from you that the word of God first went forth? Or has it come to you only?
37If anyone thinks he is a prophet or spiritual, let him recognize that the things which I write to you are the Lord’s commandment. 38But if anyone does not recognize this, he is not recognized.
39Therefore, my brethren, desire earnestly to prophesy, and do not forbid to speak in tongues.40But all things must be done properly and in an orderly manner."
Of course, there is the usual criticisms that usually get thrown out whenever this passage comes up in discussion. Let's talk about 'em.
You can either agree or disagree with it, but it's Paul's plain counsel to the church.
Once a person has seen and experienced the value of it
and how it really does work so incredibly well at edifying and building up the church, as opposed to abusing and robbing the church by making it sit patiently through mindless, powerless ritual and rhetoric through force of conscience, they'll see how truly 'of God' it really is. You won't go back. That is if that person is truly seeking God and not just looking to check the 'Went to Church today' box on his imaginary 'What Christians Are Supposed To Do' card.