The body would show signs of freezer burn if frozen. Crystalization would occur somewhere, even in the veins, if that was the case. I can buy refrigeration, but not freezing the body.
I have this hunch Westerfield will be convicted no matter what though. A crime this horrific, often a jury will want to punish somebody. Westerfield, guilty or not, will do just fine.
Only Damon was driving around the desert on the 16th. Not DW.