A very odd "Stance Glitch"

So I’ve been running into this odd glitch when I’m customizing my Spartan, he still in the stance before I selected customization, and not only that when he flexes, he still has the weapon in his hand, and here’s a clip made showcasing this glitch:
http://youtu.be/YPAE3YhIPOE

its normal it supposed to happen when u customize a new armor or helmet.