A high-voltage probe is actually a useful piece of equipment to have around. Not only will it "gracefully" discharge the tube (over a period of time via a resistor instead of instantaneously), but at least with mine, there's a meter built into it that reads voltage in kilovolts--you can watch the tube discharge, and know when it's finished (or know from the start if the tube was even charged or not).
Also comes in useful when you have no picture and need to see if there's any high voltage--just ground the alligator clip to the tube's ground, slip the probe end under the suction cup, and read the meter.