I suspect that "pulse amps" means momentary surge current. In the motor you're talking about, this condition occurs at locked rotor stall. This is also why locked rotor is limited to a 1% or so duty cycle.
And, yes, you do consume LOTS of power when you stall PMDC motors - and you can also create LOTS of SMOKE. This is why a servo amp with a properly working and configured protection circuit are critical to their operation.