You still could not complete 2 spells within one global cooldown (3 sec?). Not sure if it's working this way atm.
Classic example: Mezz a mob, use jboots to clear GCD, cast color shift (1.5 sec) right away: You get "spell recovery time" not met message. You had to wait a little over 1 sec after clearing the GCD to be able to cast color shift. It was still immensely useful though.
While it wasn't working as intended, it took them *4* years to fix it. At one point, it becomes a feature, not an exploit or a bug.
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