Exactly as above poster said, but you should almost never ever use flumazenil, especially in above patient. It would put him into hyperacute benzo withdrawal, complete with seizures and all other deleterious effects. The only time to use flumazenil is in someone who you know 100% fact does not use benzo's on any sort of chronic basis (which is rare unless you're talking about anaesthesiology practice or something), not to mention that in an hour when the flumazenil wears off, you're back in the exact same boat you were to begin with.
The key in your situation is supportive treatment, including intubation as needed. Leave the benzo's on board since they're already treating his alcohol withdrawal. The same as if you're dealing with an alcoholic who's placed on any drug or OD's on any drug that treats withdrawal (such as propofol if you intubated someone). CIWA protocols vary from hospital to hospital, but regardless you have the nurses watch for withdrawal symptoms which will appear as the benzo's wear off, and you yourself keep an eye since as the benzo's wear off you're likely to need to titrate up the dose of your own benzo's you give for the withdrawal.