[alexandria]

The prosecution really wouldn't have the option of a deal. If DW requested a lawyer during questioning the officers HAVE to stop asking questions.
They then can 1) arrest him and get his lawyer. 2) not arrest him and let him get the lawyer so they can question him again.
To not give him his right to counsel makes all statements after that null and void as far as testimony. Thats why we've heard his testimony up until the point he asked for counsel when he went to station that day.

[John Jamieson]

That's why the rest had to be sealed, or have a misstrial, which the judge didn't want. I think many deals have been cut, with the judge's approval.