The painful reality for me is that most of the pastors I have watched be fired had nothing to do with bad theology. It had to do with a character failure or a lack of leadership ability and training. Leading a church is extremely difficult and we should prepare these pastors for the leadership challenges that lie ahead. This post by Chuck Lawless is very helpful:
“Over the past several years, I’ve paid more attention to reasons pastors—including some of my acquaintances and former students—have been fired. In some cases, the congregation has been a “knucklehead” group of people who’ve treated a leader poorly; but, I’ve also seen some leaders who invited trouble by doing the following:”