Nice! Very cool that it popped.
BTW, another way to help remove stubborn seed husks if you'd rather not touch them, is to wet the husk. I generally use a fingertip and put a single drop of water right on top and it often softens it up enough to open on its own. Sometimes it takes a couple of applications. I've successfully used small pliers as well, but always worry my clumsy fingers will cause damage.
Good luck. Hope it takes right off for you.