Not a theory - Puck dents and inconsistencies - After a puck has been used there are now problems with the puck. Chips, dents, cuts, etc.
This is a well known fact! I have over 800 pucks for shooting in the shed for my children growing up, and all are imperfect after use. here are some links for NHL pucks (probably the most scrutinized).
Ovechin's 50 goal:
http://www.russianmachineneverbreak...ich-of-course-he-dented-with-his-shot-photos/
Puck's for practice:
http://www.shutterstock.com/pic-157...hoto-of-a-wall-of-well-used-hockey-pucks.html
And this is probably the one they used for the UM / BC game -
http://www.collectorsweekly.com/stories/158296-1800s-hockey-puck?in=869
Any joking aside, ask a player from any Div 1 team (Male or Female) and they will tell you that once a puck has been shot, it becomes imperfect. And it likely started out with some issues but not as bad as when it first gets used.
Ask yourself why does a puck fluter after being shot? Several reasons, imperfect puck hitting the stick where it's blemished, bad tape or tape job, bad ice, bad shot. It can be any of these.
If you think that these pucks are unblemished, please go look at the warmup pucks after warmy's or look at the games pucks after the game. Any that are used are used!!