I agree with most of what other posters are saying.....except I do believe DP dismembered Stacy to hide evidence. Yes other bones can be tested, but they aren't as easy or sure as certain bones (sternum, teeth, hair root, large bones....) and DP knew this. None of those things have been found, not that they won't be....but not yet. Just saying I think it was his plan.
"Identifying Characteristics: Pierced ears, tattoo of a blue and yellow "carnation" with black "tribal" around it on the small of her back, tattoo of two red "cherries" with green "leaves" on front left hip, surgical scar across lower abdomen."
Getting rid of the pelvis, head, and hands removes most of the easily identifiable markers. No more tattoos, surgical scars, or pelvic bones to tell sex or if they have had children; and if it was done outside, as I believe he did, disposing of clothing, tools etc is much easier, especially if he had been planning this. For all we know, he put the different parts in different containers and the other container was the one he was trying to get the truckers to carry out of state for him.
What if they only found the not easily identifible parts and they were too degraded to test? Home free!! I believe that is what he was thinking, and didn't really plan on this happening when it did, so maybe everything wasn't perfect....but pretty darn close.
Could the blue barrell TM helped carry really have been pool chlorine or some other chemical??? To hold the more important parts? He might have needed another container, couldn't dump the chemicals on the ground (plus he needed them), TM is good scapegoat.........could he have been doing this while TM sat at Krispy Kreme?? If Stacy was already at the airport in the trunk and he had already gathered his extra clothes, tools and containers, (the trip to place "stickers" on his plane actually a supply run??) a truck stop shower afterward.............I can see it