I've heard of other people getting this glitch, but I haven't experienced it myself! It sounds pretty cool.
I've also heard of a glitch where dragons spawn as skeletons and then behave really strangely - crashing into the ground, sinking through the terrain, that sort of thing.
I have the crashing into the ground thing ALL THE TIME. Every time I sneaked up on a dragon and shot it before it awoke, it flew around once and dove STRAIGHT into the ground, slid
underground for a few hundred feet, and just went 'ahh I'm done' and died. I no longer sneak on dragons.
Also I agree it's such a cool glitch ^^