First thing to do is take a deep breath and calm down. You being freaked and afraid is as far as I'm concerned going to key up the snake even worse. These are predators and I believe they can easily pick up the fear/tension messages humans broadcast on a level we are unaware of.

Just shove on some gloves or drop a light cloth or a spare glove over his head to confuse him for a moment while you securely hold him behind the head and down his body. Don't hesitate and give him time to work his way loose - just calmy and quickly deal with himt. Put him back in his enclosure and leave him be...he's probably scared witless and just trying to survive out there on the big open floor with some predator hanging over him (you=predator most likely in his very basic snake brain).