One of the things that has convinced me that MS was aware of the plan to steal the truck and murder the owner is that if he wasn't aware then DM would have had no reason not to kill MS too. Why would DM keep the only witness to the murder of TB alive if the witness was not a willing participant? DM had the means to kill and dispose of both TB and MS had he wanted to, or if he thought MS posed any threat of DM being caught, IMO. He'd just say to friends that MS took off after the test drive because MS was feeling sick and he didn't know what happened to MS, IMO. After all, DM's ignorance about the whereabouts of LB never garnered him too much suspicion, IMO. DM didn't consider how thoroughly his actions could be traced by video cameras, phone and text and Internet search records, cell phone pings, etc. etc. and those who knew about and/or went along with DM for previous thefts and those who knew about TB's planned truck theft also knew that WM had died from a gunshot to the eye and that LB was missing, so you'd think DM would have been under intense suspicion by all those who knew him and yet we're to believe that know one else knew or suspected anything about DM's involvement in these other murders?
DM thought the Eliminator was the perfect instrument to ensure that he got away with murders, IMO and he was so bold to walk up the driveway with MS to meet TB without a care of later being identified by witnesses, IMO. Just like when LB went missing, DM carried on business as usual, without a care in the world about being caught because both DM and MS had already murdered her and incinerated her body, IMO. I am really convinced that both DM and MS are equally guilty of first degree murder of TB, IMO. I'm glad they were both caught because I have no doubt that together their missions to kill people would have only escalated and there would be many more future victims, IMO. I also believe that others knew exactly what that Eliminator was used for, or at the very least, had some well-founded suspicions, IMO. I hope it is dismantled piece by piece and never used again for any purpose!
All MOO.