Well congratulations on your performance!
I really don't know how to comment on this sonata at the moment. In some ways I feel I should be qualified to do so, but it seems like those same ways more disqualify me. It's a paradox.
I like the observance of the staccatos and rests in the chords of the recitative section, 9:30 and following. The voicing in the left hand, 14:55 - 15:00 and again (especially) at 25:25-25:30 in the B major section, is exquisite. It was over all a more dry interpretation, and it came to a literal, matter-of-fact close. There is something of timing in this sonata, relativity and timing...I feel like I want it to be as long and as epic as Parsifal, but it can't be. It's a funny thing, this sonata runs the course of a lifetime in 30 minutes, or here less, but it is essentially the length of one of Bruckner's slow movements - things I think about that you don't have to think about. But as far as timing goes, its lacking space, or a roundness of time...I don't know how to describe it - on paper it is just right, but there is something I can't put my finger on, and it could just be the challenge of bringing off the piece (aside from the obvious technical difficulty which you've so easily mastered.)
Ah well, it is an excellent, powerful (first?) performance, and yes, a bit unleashed. I couldn't hope for anything better (I believe my first performance was in November 2004, and this include a slip in the fugue forcing me to jump on a different path...10, 20 measures just disappeared!).