When I picked up the arrow and inspected it it apeared that the broadhead didn't deploy completely.
And that's what can be so misleading about mech heads. They can close back up partially or even completely after a pass through. But good grief look at the holes in that spike.... oops.. I mean 11 point you posted. That's pretty impressive holes in my book and it's pretty obvious looking at those holes that the head did indeed open. Looks like that deer was stabbed with a spear.
But if you had made a bad hit and lost that deer. And you found that head which
"looked like" it hadn't opened properly. A lot of people would jump to the conclusion that they lost a deer because the head didn't open.
That's why I pretty much dismiss any claim of a broadhead not opening unless the hunter has a deer to show me the tiny round entry and exit holes to prove it.