oops, no wonder this didn't work.
fix incorrect placement of RCS forces.
fix occasional doubling or disappearance of arrows
trim
debug code.
use static for direction
match the input keys in rotation mode
target mark for give an idea where your vector should be pointing.
get rid of ShowCoMForces

And improve performance by getting rid of a totally
unnecessary FindObjects.
reset some stuff on Start

so we don't get a bunch of forces the moment we enable the CoM.