Thanks for the clarification. Well I was wondering how this should work since stepper motors should work as a generator if pulled by hand. If coils of two stepper motors are connected (or even one) this should form a closed circuit. So when I pull one of the axis by hand it should generate electricity which activates magnets and thus it starts to resist movement at the same time.
Before I began to play with wires I got stuttering moves (just like one descibed before) when I tested movements from RAMPS. It is entirely possible that I had attached some wires wrong. Seems like I have to return on this one again tomorrow.