That’s one of the chief arguments against the IFB churches. Although the other denominations aren’t completely exempt from this pattern either, I think it’s much more prevalent in the IFB model. Those IFB pastors like to say they’re accountable to the deacons, but the reality is no deacon is ever going to get promoted to that position without the approval of the pastor,” so in essence, the IFB pastor usually ends up only being accountable to himself unless he really goes over the line and law enforcement gets involved—even then, it sometimes doesn’t expel the pastor.
I spent several years at Lancaster Baptist Church which is considered by many to be the "Model IFB Church" and I recall seeing new faces in the deacon ranks all the time but never recalled there ever being a nomination process or any church-wide election for deacons. It is therefore a mystery to me regarding their selection process. Perhaps one became a deacon when Paul Chappel would approach someone and said "I would like you to be a deacon" or maybe it was the deacons themselves who nominated other men to serve as deacons? I guess I will never know now. I remember his speaking about being accused of having only "yes men" around him to which he responded "would you rather they were all 'no' men?" My thoughts on the matter (which I obviously kept to myself) was that I wanted deacons (and the pastoral staff) who were loyal to Christ, loyal to the scriptures, loyal to (and therefore protective of) the church that Christ had purchased with his own blood. So long as Bro. Chappell was of this same mind, there shouldn't be any issue between himself and the deacons or anyone else in leadership! Accountability should not be to a particular man but to the church as a whole! Chappell once spoke of accountability saying that he had made himself accountable to certain "Pastor Friends" across the nation that he looked up to implying to me that he did not feel accountable to anyone in the church that he was pastoring. If this is actually his position (he'd likely deny it and accuse me of slander), it is not only unbiblical but very much contrary to the Baptist view of local church autonomy!
The last Church I was a part of in California was a pure "eldership rule" where the congregation did not vote. Deacons were selected by the elders and the congregation had a specified time in which they could raise any questions or concerns regarding the personal character and integrity of these candidates. You would think such a church to be much more heavy-handed and authoritarian but the leadership was quite humble, approachable, and treated me as an equal! The Senior Pastor drove an old F-150 and referred to himself as being "one of the elders." Although I disagree with their polity, I learned much from them while I was there.
It wasn't until after I moved back to Texas that I heard of "elections" for the offices of deacon, elder, trustee, or whatever else. At our Church, any member in good standing can nominate someone to serve either as an elder or deacon and our church constitution has specific requirements for both. Every nominee is carefully vetted by the eldership (personal character and biblical qualifications, etc.) before they are placed on the ballot. Every candidate is elected and installed into office if they receive an affirmative vote of at least 2/3 of the membership.
If a Church has deacons but no elders (just one sole "Senior Pastor"), the deacons will act like elders by default due to the fact that there is a power vacuum that must be filled -especially if there has been a "revolving door" of pastors and the deacon board is the only semblance of stability a congregation may have. For this reason, I am a strong proponent of an elder led, congregational rule church where there is a plurality of elders forming an elder board of which the pastor is a member and may be regarded as a "first among equals." It is at this level that a pastor should be held accountable as there should be mutual accountability among the elders. I do not believe it is the deacon's job to hold a pastor accountable but the pastor be willfully accountable to the deacons as well as the congregation but such accountablilty is to be ensured and enforced through the eldership.
Hope this makes sense and my apologies for the long-windedness.
I am no fan of Hyles but in his defense, he has come out and acknowledged times where he was vary much in the wrong regarding his actions and attitude towards the deacons of his church.