I'm sorry you're going through this I'm sure it's quite complicated with a family and everything and it probably leads to many sleepless nights. I'm sorry no one has responded up to this point.
The fact is I'm not quite certain that an MBA is going to be the solution. That might be sort of a Band-Aid situation there. I think the most important thing for you to do is to get some clarity on what's going to fulfill you and at the same time sustain you and your family.
I would recommend that you work with a very talented career coach. I'm a career coach myself, however you might want to work with someone in Silicon Valley who has been in your shoes or has more experience with your particular industry.
I would recommend going to the ICF directory and finding someone from their who is a career coach. Just Google ICF directory career coach and you'll probably get to it that way. ICF chapter Silicon Valley might also get there.
Encourage you to get some support and think through this before making any rash decisions.
There could very well be a way for you to repurpose the knowledge you've gained in a way that would be fulfilling to you, such as coaching/mentoring people that are in positions Junior to you or something like that.
It might not be a matter of throwing the baby out with the bathwater, and then again it might be, but I think it will be best for you to Mastermind with somebody who is experience in this area before making any choices.
That said I do believe in going with your gut
best to you!!
Farrell Dyan Hehn, MBA
Admissions Consultant & Verbal Strategist MBAPrepCoach.com