I'm very sorry to see this so late...
John, I am grieved for both of you.
I will pray, for sure. My own brother is in the process of leaving his wife. It is heartbreaking.
I've been in dark places many times in my 20 years of marriage, and my poor wife has too. Andy is right, the absolute commitment is very important. It does take both, however.
Sounds like a crossroad indeed. Take the issues one at a time, as much as you can. While there is hope for your marriage, make that your priority.
I know you are familiar with the Bible. Give Ephesians 5 a look. sacrificial love is the man's most important role in a marriage, and also the most difficult.
Alas, the love of many has waxed cold in our day...
Matthew 24:4-31
" 4 And Jesus answered and said unto them, Take heed that no man deceive you. 5 For many shall come in my name, saying, I am Christ; and shall deceive many. 6 And ye shall hear of wars and rumours of wars: see that ye be not troubled: for all these things must come to pass, but the end is not yet. 7 For nation shall rise against nation, and kingdom against kingdom: and there shall be famines, and pestilences, and earthquakes, in divers places. 8 All these are the beginning of sorrows. 9 Then shall they deliver you up to be afflicted, and shall kill you: and ye shall be hated of all nations for my name's sake. 10 And then shall many be offended, and shall betray one another, and shall hate one another. 11 And many false prophets shall rise, and shall deceive many. 12 And because iniquity shall abound, the love of many shall wax cold. 13 But he that shall endure unto the end, the same shall be saved. 14 And this gospel of the kingdom shall be preached in all the world for a witness unto all nations; and then shall the end come. "
You are a man highly esteemed in my eyes. Do your best to do the right thing in each circumstance. Honor your vows to your wife.
I'll keep praying...
Tom