I am sorry about your husbands recent episode. Please let the neurologist do his job. Do to the fact that his MRI/MRA came back normal then he probably won't get a MS diagnosis. If he is no longer disoriented and numb or dizzy/drunk it seems unlikely it is MS. With MS, when things come like that, they stay for a longer time. They tend to come and stay for weeks or forever. They get better very very slowly if at all.
The neuro has ordered good tests with the VEP and BAER and those should help figure things out. VEP is the visually evoked potentials. They will hook up electrodes to his head (painless) and he will watch a computer screen that has a flashing checkerboard pattern, while he is to watch the center dot on that screen. The test takes about ten minutes although the set up and take down and other wait times make the over all test an hour or so. BAER is a hearing test. Like the VEP it is checking for nerve function in that process.
You might google TIA. That seems more likely than MS. The fact that he has raised cholesterol at 24 could make him at risk for a stroke. I would take the cholesterol very seriously. You need to also have his heart and arteries evaulated for stroke risk. How is he blood pressure?
Ok so those are just a few thoughts. I do hope he feels much better real soon and that this doesn't happen again!! Again, I am not a doctor so I am just sort of rambling here with my thoughts and opinions. Here are some sites that discuss TIA. The symptoms you mentioned are all there.
Gretchen ~ diagnosed with MS July 2006
I have no lesions on my soul and so I will live with no limits.