To me, the bottom line is, Biblically, a man should be married to only one wife at the time of calling as a pastor. All bigamists need not apply. Divorce history is irrelevant, as is any other criminal or moral history, except as it sheds light on his current moral qualifications.
Because the scriptural injunctions are present tense, not past tense.
What's even more shocking, is, I am perfectly willing to accept a man that is unmarried as a pastor, even though the scriptures do not explicitely state that is ok. I merely assume that the scripture is warning against accepting bigamists as pastors and deacons. There have always been bigamists, and at the time the bible was written, it was perfectly legal.