It is my theory that Barry wanted to catch Suzanne at home, before she left for her Saturday afternoon bike ride.
He raced home, rage mounting, and pulled right up to the RR bay of their garage, leaving his door open.
Later, he backed his truck up, to the area where his trailer and Bobcat remained, also freeing access to the RR.
I think Barry left his truck parked from then on, until the early morning. IF Barry used his Bobcat, then he untrailered his trailer from the truck Saturday night, trailering it to the RR or a different vehicle.
Regardless it is my opinion that, when Barry reunited with his truck around 3:30 in the morning on Mother's Day, he positioned the Bobcat adjacent to the trailer, as oriented when LE locked PP down.
I think Barry was in contact with a deceased body within 12 hours of expiring. Barefoot but wearing cadaverine, Barry walked onto his trailer, stepped into the bucket of his Bobcat, and from there, climbed into the cab, where he snd cadaverine sat for a brief period of time, while he drove it off the trailer.
He may or may not have used the Bobcat for the purposes of concealment, but IMO there's a smoking gun here. Despite all his careful planning, I think he inadvertantly transferred cadaverine to his Bobcat. This blows all other possibilities out of the water. Gone girl, Cat, lover, abductor.
I don't know why Barry didn't take his beloved Bobcat to Broomfield. That makes no sense to me. Weakens his wallibi. He must really, really, really have wanted LE to see his abandoned Bobcat and find it innocent of involvement. But again, so too if it was in Broomfield all day.
One thing I hadn't considered until recently is this -- from upthread, someone referred to a log across a path --
Perhaps Barry used the Bobcat to create a diversion. If a mountain trail had a log blocking it, arranged by a landscaper who labored to create the vignette, LE might choose not to check further, determining the route to be impenetrable. Did Barry create a "natural" roadblock?
Busy B was very busy.
JMO