I'm so sorry. I just now saw this thread. I'm a psychologist and work with many bipolar adults and children. What your dh did is completely normal for the disorder - unfortunately. Like others have said it's like the cruel joke of taking meds that actually work - you forget that you actually NEED them.
There are a couple of things you can do. First - YOU HAD NOTHING TO DO WITH IT! - (yes, I meant to put that in all caps). Seriously, it's his disease, not yours & while you can take the responsibility of how you act/react to him you cannot take responsibility for him. So let yourself off the current hook now, and forever.
Second, once he's restablized, it might be a good time to talk about credit card access. Many bipolar patients have issues with gambling, shopping, and simply going bazerk with money in general. I know that when he's stable he needs access to a credit card - I understand that - look into a low limit - say $500 one.
Finally, make sure he has a followup appointment with his psychiatrist...sooner rather than later.
Take some precautions now to protect yourself and him in the future. So you're not walking around for the next 5,10 or 15 years waiting for the other "shoe" to drop.
Take care of youself
