At the very beginning of the episode, it is Daniel who is seen falling to the ground. Then a gloved hand reaches down and takes the picture that Tyler was showing Daniel and then fires two shots. Talk about confusing. Here's what I think... The Japanese guy did it. He knocks Tyler and Daniel out, takes the photo, shoots Tyler twice, drags Daniel a ways off, gets in his car and waits. Then he whisks Amanda away when she stumbles out to the road, he probably took the keys from Jack's truck, too.
I've been too tired this week to give it much thought, but your theory makes perfect sense.
