I like to explore all angles, I never come to conclusions by filling in gaps which is why I was furious with the cyber-vigilantes on AM's page. The following is a hypothesis, an angle that has not been explored and may deserve some thought.
As the witness who identified Millard's tattoo has not been named, I would like to point out that we know nothing about him other than what he's told police and that he also owns a Dodge Ram 3500.
We do know that he didn't come forward about these two 'suspicious' individuals until police contacted him first, despite the huge media coverage.
We also know that police contacted him first because the burner phone lead them to him.
If Millard is claiming a frame up then this is the only person who he can claim could have framed him.
So playing devil's advocate (or something like that) and looking at it from the perspective that Millard actually was framed, the scenario goes like this.
Guy in Toronto who is in contact with Millard and is involved in TB's abduction is suddenly contacted by police who have connected him to the burner cellphone.
Guy immediately makes up a story that implicates DM and takes steps to plant the evidence on Millard's properties, utilizing his gang.
DM arrives on his farm property or hangar and discovers Bosma's truck, at the same time he learns that police are looking for someone with an ambition tattoo on his wrist. DM panics, loads the truck into his trailer and drives it to his mom's house shortly before getting arrested.
Im only putting this out there, because DM has claimed a frame up and that has to be explored, personally I think its far fetched and tv/hollywood kind of stuff.