For my first post, I may as well try to be helpful, right?
I had a similar problem when draining an aquarium that I didn't want to move or disturb once. The trick is to get the siphon tube full of liquid, then cap one end so no air can get in to displace the liquid, then position it to start and let the liquid begin pulling the beer out of the higher container.
Since this is beer and not stinky fish-water, I would suggest using sanitizer solution or sterilized water that you wouldn't mind getting a little bit into your beer.
Fill the siphon tube by submerging it in the water. Put your sanitized thumb over the lower end and remove from the water - the tube should remain full. Then carefully position the upper end of the siphon underneath the level of the beer in the primary, keeping your thumb over over the lower end so the tube can't drain.
Place a cup on the floor and put the low end of the siphon near it. Take your thumb off of the low end and let the water/sanitizer siphon into the cup. Stop it with your thumb once the beer gets to the bottom end. Then move the bottom end of the siphon into your secondary and let it go. It should start pulling beer.
Sound good? I may do this myself since I managed to snap the end off of my autosiphon on my second batch!