JillUser: I'm well aware of existence of chemical imbalances, as I've been very close to people with severe Bipolar Disorder. I've seen the worst of it. The tragedy. Overuse of drugs, self-medication, self-sabotage, self-mutilation, alienation of friends, one's entire life degraded to a black hole of NEED, life purpose and potential flatlined forever.
I learned to sense such people at the distance. I don't care if he throws a chair at you from time to time. Your husband simply does not have a disorder remotely approaching it in severity.
Why Aikido ? Aikido is not just a physical activity, like running. It's not about "runner's high". It's not just any martial art. It is referred to as an "art of peace". It is a set of engaging movements that deprogram aggression on subconscious level. It is the closest to a physical manifestation of "exorcising one's demons" that I've ever experienced, and it never fails to be a great stabilizer, not to mention, of course, nice cardio and most importantly FUN.
When I was clinically depressed 10 years ago I went to a psychiatrist who strongly pushed for anti-depressants, how they're "harmless" and how I could have a "much better life". I refused vehemently, and started Aikido instead. I got myself out, over the years, and attribute 75% of it to Aikido.
If I wasn't taking Aikido now, I would be a much angrier person. Also, as a creative person, I am quickly bored with repetitive movement, and Aikido always offers something new, a visible way to get better at it and sense your progress. A real life "level up" if you will. Which is why I think it is a perfect fit for Mr. Wardell.
Speaking of Mr. Wardell, I find it odd that you take it upon yourself to filter inquiries addressed toward him. Let him make up his own mind, as "imbalanced" as he may be.