Good point about the need for a glass top. Typically it's to keep people from stealing the balls, but in this case you are supposed to take them with you!
The other funny part was that the pretty lady working the gumball display was likely hired simply to attract customers, not someone deeply trained in the workings of the product (LOL). So, I would have loved to have been a fly on the wall when the owner did come back, saw the broken gumball, then listened to "It was the craziest thing. The..th...these 2 guys with foosball shirts showed up, started playing foosball, then 'BASH', it just shattered. I..mm...mean it just SHATTERED', then they just disappeared..." Oh, what must've gone through his head...
Tyler