He took a calculated risk, and placed his trust in a civilian, but as has been said, he was for all intents and purposes, mortally wounded.
His acts were in line with coming to the realization, that he was going down, and he needed to feel somewhat secure, that his weapon was safe.
I've experienced severe blood lose. The cliche "Lights going dim", is spot on. The numbing hum in your head, telling and scary as you begin to lose motor skills. I can tell you this, I wasn't much worried about anything but dying.
