He had a six plus year affair. It is obviously not a random lustful affair.
And you have no idea how this will affect him. Some people can compartmentalize their lives. I know of people who can deal with dying spouses (or having a terminal illness themselves) while continuing to work and if you didn't know what they were going through, you wouldn't know they were dealing with adversity.
And how do we know that Vrabel and his wife don't open relationship and he is allowed to date other people? I don't care about his private life, but his wife could have always known about Russini.
We are over two months away from training camp. Odds are good that this will all be over by then.