Start by pulling off the CRT anode, just slip your finger under the suction
cup and pull, and it should come off.
Apart from giving the OP a possible nasty electric shock, what is this
supposed to achieve?
And the anode _connector_ (not the anode itself, which is a conductive
coating on the inside of the CRT) doesn't just pull off in most cases.
You have to unhook the ends of the connector from the lips of the metal
socket sealed into the CRT glass.
But before doing that, you want to discharge the CRT. I use my EHT proble
for this (it;'s an 800M resistor in series with a microammeter). Clip the
return lead onto the CRT earhing contact,the slip the probe under the
conenctor cap until it makes contact with the metal conenctor. Wait for
it to discharge, then remvoe the connector.
-tony