If I were in that situation, I would do whatever it takes to make sure that my marital problems DO NOT damage my kids the way my own parents damaged their kids. I don't care what it takes, I WOULD NOT ALLOW my kids to have to grow up in an unhappy, disturbing home like helpless little prisoners in a SCARY prison camp.
The horrible childhood I had shows me how hideously destructive unhappy parents/parenting can be and I'm still trying to get over it!
good luck saving your kids from INEVITABLE mental/emotional damage,
jim