one of the most common misconceptions people have about discharging is the one you made as well. The capacitance isn't in the anode wire, its in the tube itself. IOW, when you pop the anode off like that, there is still a real possibility of a charge left in the tube. You can touch the anode wire all day long, but reach up and touch the anode hole in the monitor, and chances are it'll give you a good shock still. The anode wire is only hot because its connected to the tube.
I use a real small screwdriver, and after the anode cup is removed i just let the screwdriver sit in the hole for a couple of minutes to make sure the tube is completely discharged.