Distaso told the judge "I'll get to that later."
Right. Presumably, Distaso is making a note of it, then, at the end of the trial, when there is no possibility of a witness changing his/her story at the behest of the defense, THEN it will be time for Distaso to tell the incident as he and the prosecution see it.
My guess is that it will be argued as: "Yes, there's the same shirt Amy saw Laci wearing, the last time Laci was reliably seen alive. It's there in this photo, hanging out of the Petersons' clothes hamper. Perhaps one of the last actions Laci did before she died was to put that shirt where you see it in the photo. But someone noticed it was there, and took a picture of it. And Scott realized that someone had seen that shirt there, so he took it and wadded it up and quickly stuck it in the drawer, out of sight. Why? Was he afraid that the presence of that shirt in the hamper might contradict his fabrication that Laci was wearing a white shirt the day he says someone else kidnapped her? Was he afraid that the presence of this shirt in dirty laundry would tell us that Laci really met her death at home--not out in the park or on the street somewhere?"