IMO Barry spent the afternoon/ evening hours of 5/9 disguising the crime scene. Phase I. Preparing Suzanne's body for transport (IMO a cooler with neutralizing agents), burning her distinctly bound journal, doing laundry (IMO he washed his shorts because -- and this is important if true -- he took them off before she was dead. He did not throw them away, he laundered them. Potentially damning implications IMO), repairing and staining the breached doorjamb, etc. After about 10:30 on 5/9, I think Barry did not re-enter PP (until escorted by officers on 5/10) and I believe it was 100% by design.
I think Barry waited until full dark for Phase II. (Could he binocular his way to the R neighbors' house? See when they reached Lights Out? They were his only neighbors for miles, I think, so he'd want to wait until they were down for the night.)
I think Barry may have borrowed a vehicle for use overnight. From his hospitable, out-of-state neighbors who'd never know or from the fire camp (IMO Barry could hike for MILES with a full-size elk, a well-sealed yeti or his lithe wife).
By 5 am, his work was done, short of the dumpster runs. And let's face it, his "alibi"? He went to Broomfield TO throw things away!!! That's it! Not to work. Not to eyeball it or set it up for his crew, nope, nothing. He went to Broomfield to shower, to throw stuff away and to wait....
I think Barry worked HARD between 11pm and 3:30 am. I just don't know what he was doing or what he had for equipment. Hiking, digging, backfilling, landscaping (using his skills to erase signs of disturbance -- as you'd see when an earthmover might dig a trench for access to a sewer line, only to fill it back in, finishing it off in such a way that no one would know work had been done).
IMO Suzanne could be in a mineshaft (very likely IMO she's there with the missing elk carcass or whatever he hunted during either his alleged bear hunt or turkey seach) or she's in an actual lion's den or near to it (with that same elk or deer as bait -- I think his insistence on the mountain lion may have held truth -- she would've been mauled by a lion -- because he/Barry dragged her up the mountain, set the table and invited a lion to clean up) or he used all of his skills to barry her in a couch pit, for instance raking back his own driveway and then finessing it to perfection over the top of her or he barried her in a pre-dug hole, planted a tree, arranged a couple of dumb rocks and felt he'd done a solid.
When he returned to PP at 3:30 am, IMO he was filthy, was running on adrenaline, stripped down, rinsed off (without ever going inside). Again with the shorts, IMO if he'd worn them overnight, they'd be in the throw away pile, not the laundry.
Naked and barefoot, I think he stepped onto the trailer, stepped into the bucket of the Bobcat and climbed into the seat to drive it off the trailer because it was his only way to remove the trailer from his truck.
(I wish/hope LE tested the loose dirt/gravel on the trailer. I think Barry may have stolen a load of soil/sand from the beach property for backfill.)
IMO he did SOMETHING between 4 and 4:30 following that left turn. Less than elk but more than helmet --
And headed out of town.
JMO