If you utilize this, you will gain 65k Spellpower and your attacks are going to be big.
Classes that can use it: Hunters, Rogues, Shamans, Paladins, and maybe Warriors (haven't tested)
First of all, you need to buy full t10 and some pve offpieces. You must gem everything except the helm with the +20 CRIT RATING YELLOW GEM.
Then put a 20 agility red socket and a 32 stam + stun duration meta on your helm, AFTER you have gemmed the others.
Get two identical weapons. Gem one with a blue 30 stamina gem and the other with a 20 crit rating yellow gem.
Equip the stamina gemmed weapon and get a rogue to dismantle you or a mm hunter to scorpid sting + chimera shot you, or a warrior to disarm you and then, DURING THE DISARM, put on the crit gemmed weapon.
After the disarm duration is over, look at your SP. It's over 9000.
By the way, if you are dual wielding, you need to have your off-hand gemmed with 20 crit rating too (no changing required) and just change the mainhand from stam to crit during disarm.
How to utilize:
Rogue - Lace your weapons with wound poison and watch as every hit you make causes 20k dmg. Also, eviscerate causes over 100 000 damage with just 1 combo point. I soloed BT with my rogue.
Hunter - Shots cause around 50k damage. Explosive shot crits for 180k.
Paladin - Well... enjoy 65k holy shocks, 80k flash heals, 65k ticking concecration and more.
Shaman - This is beast in any BG. Just cast chain lighting = wipe enemy raid.
Warrior - I'm not sure, I haven't tested anything, but a guy told me that you can, so... I don't know which skills do massive damage.
The bad thing is that it doesn't work with mages, priests, locks, etc.
I tried disarming (they were with staves, all of them) and doing the exploit but no SP was given.
Is it because of the Staves? I've only tried with swords (pala), axes (hunter) and daggers (shaman, rogue).
I'll try it later, or you can and post here.