First yoga class - please take some photos - they could be very ammusing!
I haven't tried deep water therapy, but I did do water therapy as part of my recovery. It was one of my favorite and most beneficial activities soon after my ADR. One of the most intense core workouts I've attempted recently is using my physioball for a variety of total bady workouts. It is similar to the advertised "Core Secrets". I was pleasatnly surprised by the workout intensity and support for my spine.