PG - I wouldn't sweat or try to decipher what in the heck her boyfriend is trying to say. Because, let's face it - anything an addict states is a) a complete falsehood or b) devoid of common sense or c) a combination of a & b. Enough said.
And the mere idea that he is trying to make this about him or pass the buck or find insult or whatever is a sign that his ego is still at stake and he is nowhere near the point of crying uncle and admitting that your daughter needs help at any price. And that's the kicker. She needs to see the light and accept the idea that getting help and working towards sobriety is her BEST option to change her life. If he could be humble or strong or decent enough to say - run for sobriety and it's ok to leave me behind, choose what's best for you and our baby... MAYBE that could push her towards help. But I don't think he's that guy. On the other hand, maybe the court and the threat of jail time will be enough to push her towards the light. Add some medical help for mom and the baby, a few days of sober thinking, a safe place to lay her head and a few decent meals AND some time away from the volatility that includes baby daddy...and MAYBE there's motivation towards the light...
In the meantime, don't waste your time or your thoughts on him. Don't even respond. He is not worth the fingers on the keyboard.
Still hoping and praying and waiting to hear how it goes. I am pulling for you!