No offense, but I need to see that picture myself........exit and entrance wounds.
I agree from seeing dozens upon dozens of deer that were shot truly thru both lungs with a broadhead........let alone a Sidewinder!?......don' t live much more than about 30 seconds tops.
Did you visually inspect the lungs or other organs for damage? everything protected by the rib cage is NOT lungs, and from what I gather one lobe sticks back farther than the other.
Deer never cease to amaze me with their will to live but a double lung shot deer with a 1.5" cut broadhead that lives 4-5 hours is a medical miracle.