Thought it was a very good episode and showed a bit more of the complexities of House, House's team and his process than we've seen in a while. I think the poster above who suggested that Chase's actions are a form of trying to seek approval from him as a father-figure is valid. The series of actions in the episode, I think, make it clear that if anyone was "at fault" it was the patient or, yes, at the very least "no one's fault" since the POTW's psychotic episode stemmed from the treatment he was getting which stemmed from incomplete information on what was wrong with him.
You could also argue that House's process for training his fellows works as it's certainly done Foreman a lot of good and presumably hasn't hurt the other fellows House has had under his employ during his career.
I suspect Chase's paralysis/lack of mobility will having as lasting effects as the "brain-damage" Foreman got from his bout of Nigleria in the second season, pretty much only lasting an episode or two before it was forgotten. Hell, the primary symptom of Foreman's brain damage was left/right reversal was forgotten by the very next episode!
Anyway, this was clearly designed as a "Sweeps episode" and I think it did fairly well. Chase also has just as much himself to blame for what happened as he does House, childish pranks like dye in a shampoo bottle is hardly out of the norm between friends. And, yes, the episode greatly missed the input Wilson would have had on events.
I didn't much like the cinematography of this episode as recently House (the show) has a way of oddly presenting things. In this case the "real world" scenes in the deposition office were dimly lit and moody with varying precipitation outside, the "past"/"memory" scenes were overly washed out and white. It was only when we got to the "present" set of events with everything in the hospital and the deposition room that the color balance was bit more neutral.
I've also felt for the longest time that the more House "doesn't care" the more he cares. He doesn't avoid patients to avoid human contact but more because of, as stated, he doesn't want to taint his DDx process which would happen because as we see he cares too much when he knows the patient if even on a basic level.