The reported 0.15 BAC makes this substantially more serious in my view. The driving decision is the biggest problem. Whatever the circumstances behind his alcohol use, Romo got behind the wheel at a level of intoxication that was almost twice the legal limit. That's not a minor lapse in judgment. He was putting other people at risk.
He has taken some important steps in the right direction, So good on him. But it's too early to know the answer to the bigger questions. Hold him accountable for driving drunk, but don't shame him for acknowledging that he has a substance problem and getting help for it.
I don't think one awful incident—especially when the person is acknowledging a substance problem and seeking professional help—should permanently define Romo. I'd be much more interested in what Tony does over the next 6–12 months than in continuing to pile punishment on him for what happened in July.