Truth is... if I pack up and leave today, it would be out of anger, spite, and rage.
I know you have not made a decision yet, but I am worried that waiting too long is going to really limit your options. Please do some research in both your new location and back home about how a divorce would look in each locality. A lot of this is free online, and you can try to get a free phone consultation with an experienced father's rights attorney where you can get a better overview. As I mentioned, you probably have the option to move back home so right now you can choose where you want to be. If your wife files, or you wait too long and lose residency back home then you will need to accept that you will never be able to move back home unless your wife/ex-wife agrees to move with you.
Another thing to consider; your wife started a new job and pretty much immediately started an affair with a married coworker using company time and travel. When, not if, this comes to the attention of the OMW and their employer, her entire situation is certain to blow up. There is probably a 95% chance the OM will throw your wife under the bus and run back to his family and your wife will either be outright fired or "transitioned" out of a job.
Right now she has money, constant travel and a "Mr. Wonderful" to distract her. With her travel, she cant get primary custody. With her own money, she doesn't need yours. With "Mr. Wonderful", she has no emotional attachment to you and really just wants you gone. If you separate or divorce under these circumstances you will have a massive advantage. You can get primary custody, and either qualify for support or, betting that she will get fired soon, write into the agreement that both parties waive rights for spousal or child support forever. If she loses her job and affair, she will set her sights on you, she will become far more possessive of your home, resources and son, and as an unemployed stay at home mom, she will have a huge advantage for custody and support in a divorce.
