For all the good it will probably do them.
As I understand it, this is the same week-old load that's been sitting there all this time.
Boynton said that the oven might have filled because of the cumulative effects of all the vibrating, or because of changes in the soil's cohesiveness as it sat for days on the top of the screen.
"changes in the soil's cohesiveness?" If this was on Earth, the reduced stickiness would be because the soil dried out. In other words, I'll bet that the most interesting substances pretty much evaporated while the dirt was sitting there.
Hopefully there are still traces.