Remember him?

In his last 10 games dating back to the middle of July (since he missed about 3 weeks with a non-pitching related bruised elbow):

16 2/3 innings
14 hits
5 walks
23 ks
0.54 ERA

He has been typically pitching more than an inning per appearance.

He was supposed to be phenomenal when drafted, and then just fell apart in the majors last year as well as Spring Training, and the beginning of the season this year.

Is there hope still for him to be a dominant reliever/closer?