Yea, can't rule anything out but I don't believe Pak is a pre-meditated Grim Reaper delivery service , bringing Shannan and potentially others to their death. Why even stick around and implicate yourself in it at all if you know she is going to die?
It doesn't make any sense and I'm not absolving him of some guilt or responsibility. It's very different than the GB4. I think Pak is apathetic because he is a convicted felon and resorting to this kind of work for a living, he probably doesn't want attention on him for other reasons. He strikes me as someone is definitely shady, selfish and got involved in something way over his head.
He can play along with the narrative being spewed if it keeps him from being out of the spotlight. He is a man of few words when it comes to this case. I see him as someone who is cognizant of the corruption and convoluted nature of this, but doesn't want to make waves.
Brewer must have known about the exchanges regarding the store. Pak was contacted by Shannan with the request, she wouldn't have reached out with this request on her own accord, her and Brewer left AFTER Pak declined to make the trip for them. So it appears, based on the chronology of this that Plan A was to send Pak on ride, for reasons unknown.
@hawkshaw had made a good point, that it is entirely bizarre that a sex worker and John wouldn't have condoms or lubricant.
Just my theory but I think Brewer was aware of Pak and called an audible, sending him out of the way so something sinister could happen in the house, I can't think of any other logical explanation... a deck of cards? You're telling me he was paying hundreds of dollars per hour to play Blackjack with a sex worker?
Doubt it.