the techniques are spot-on and our sensei moves with the grace and true inner power only someone who has been doing Aikido for 12 years possess.
12 years of experience is really not much for an Aikido teacher, especially one with his own dojo. It is highly unlikely this person is even a full shidoin (certified instructor) at this point, as that requires at least 4th dan which usually takes at least 15-20 years of practice. You should look around at some other dojos and compare this person's technique to people who have been doing the art for 20, 30 or 40 years. It might be an eye-opener.