I wouldn't at this point. If it's 6 weeks already, this is now more of a new habit than a connection with the pacifier. I agree with you that this should not have happened because the pacifier should never have been taken to the restaurant, but that's water under the bridge now.
I think this is no longer related to the pacifier, except that it was taken from him in an unexpected way, and probably because he's heard some back-and-forth between the adults on this matter. Mostly, though, I think it's a new, bad habit he's formed, and it needs to be broken through constructive and positive means, not by going back to something that probably won't work now anyway.
I don't think being vocal has a relationship to being able to handle the pacifier loss - just because he's verbal doesn't mean he's emotionally more mature than the average 2 year old or that he truly understands the emotional impact of shifting from pacifier to self-soothing.
I am confused about your son being awakened by his father. Does your husband go into his room on purpose to check on him, or are the walls so thin that your son hears every noise including your husband tiptoeing into the house? If your husband is going in on purpose, that has to stop - tell him (and get the pediatrician to back you up) that a child this age needs uninterrupted sleep for brain development. There is no way it's a good idea to waking up a child regularly. What's his purpose in not exercising more care?
Can you use a white noise machine? We used one of those allergy air filter things just for the constant sound so our son didn't hear traffic noise or barking dogs or the TV.
I'm not sure what you're doing when you go in at 2 a.m., but brush up on the Ferber method and keep lengthening the time between visits. Use exactly the same words each time, very few of them but in a very soothing tone, and no picking him up.
The thing that concerns me is that he is biting himself. Did this happen just once, or is it doing it regularly? I'd address that with the pediatrician through a phone consult.