[Al Skierkiewicz]

Daniel,
By shorting the motor leads together, you cause all generated currents to flow in the short and no where else. It does not matter whether the the positive or negative lead of the battery is connected at all. No current will flow through the battery when the motor leads are shorted. This method is identical to the the "brake" mode on either the Victor or Jag. The amount of current generated and the amount of braking action is RPM dependent. The faster the motor is spinning the more braking is evident.