So what you are saying is that even if the porn ISN'T Westerfield's, it should still be used against him as a motive, just because he should have "monitored"? No, but if he's innocent, and someone else put those on *his* computers.. his lack of control over his puter is what helped get him in this mess. So...if that's the case, I feel tremendously sorry for him....
The point is what if it didn't come from his computer. What if the source is different.