Causing conflict and disunity among believers would indeed be sin if it is done contrary to biblical doctrine (Romans 16:17). In this case, you are blaming the victims of sin for causing conflict, not the one causing it. If KP is sinning (e.g. lying to donors or teaching damaging false doctrine) should not those who take notice of it biblically confront KP by approaching him privately and then if he doesn’t hear them, take him before witnesses and even the whole church? (Matthew 18:15-17) Are you saying we have not taken the biblical approach or are you saying that KP has indeed repented? We have not seen evidence for either position.
Also KP has instituted shunning at GFA. Does that not cause disunity among believers, especially when a wife is shunned and cut off from her husband’s ministry? This has been the case with the wife of a current GFA staff person for over a decade. Love in the body of Christ does not shun and divide, but seeks resolution and unity. This is our aim, but until the sin is dealt with, there will be conflict and disunity.