Yea......
I am an Apple tech and I see this kinda stuff every single day.
I have seen more busted Ipad 2 screens then I have seen logic board repairs in the last 2 months.
I even had a girl (who couldnt even find the home button to go back to the main display) try to tell me the screen shattered while she was of all things PLAYING ANGRY BIRDS!, it just up and BUSTED in her hands......yeah I then pointed out the gravel stuck in the display........
But guess what, there is a little black box in your iPad and its basic info saved via the firmware flash memory, and every single mac made after 2008. And I will tell you this, WE CAN check the SMS on everything to see if there was any type of impact or jolt. These calculations are then compared too on a chart that can tell us wether or not there was a drop, a thump, and free fall of more than 2 feet, pretty much any scenario you can think of.
And I can tell you I set through 3 work shops that deal DIRECTLY with screen fracturing and related damage. and I can tell you.
If there were a difference in ambient temperature in the iPad it would looks like a fogged up light hail light fracture webbing out in no specific direction.
That fracture my friend has a beginning point, middle and end. and it is clear where the damage originated. Tempered glass is a great thing, it speaks to you. And what it is telling me right now is .......
THAT WASNT DUE TO SPONTANEOUS KAAA BOOOMM.
YOU STRAIGHT BROKE IT.
Go ahead and take that into apple and they will tell you this.
"Sorry but your warranty does not cover this, that will be $219.90 for the replacement display"