LOL! How objective! How about "Westerfield's son takes stand against him", or even more innocuously, "Westerfield's son testifies as prosecution witness". Desperate? Hardly. If the defense suggests the porn belonged to the son, the prosecution is hardly "desperate" by calling the son himself to refute the suggestion.
When asked "why not"? He said "because my Dad was there with me"...OK? He looked at the porn, he's got raging hormones.
sw