Ouch. Sounds as though he used you to launch himself to a different location.

Sometimes when my cats are alarmed when having been in a sound sleep, they launch themselves to the nearest safe place. Unfortunately, everything and everyone in their path, takes a beating.

Maybe clipping Chester's nails would help a little.

Timing is everything in life. Sounds as though you were in the wrong place at the wrong time!

Keep the wounds clean with peroxide and benedine from the drug store. Cat's claws are usually filled with nasty bacteria.

C-A-T-S !