you'd have to consider him a bust right now. Kaz was out because of injuries and is considered a bust. Same with Boz. If a guy doesn't play for you at all then, yes that is a bust, as in a failure, a flop renderd inoperable or unusable. So far it can be considered a bust until proven otherwise.
I too am glad to see that we brought in Bruener to shore up this position. Its not too difficult to call this a great loss only that we are not seeing the benefits of a 2nd round selection. We've didn't have him last year so the addition of Bruener fills that void. If we need to shut Joppru down for this season then no big deal. Bruener is our Joppru for now. Let's just hope Jop can get better.