Some OOP: Methods of humilation

[megethia]

No: HPFGUIDX 68160

I'm usually just lurking around but while rereading some parts of GOF
something jumped out on me:
During the Quidditch World Cup, when the Death Eaters have their
little parade with the Muggle family, they turn the woman upside down
so her underpants are shown. Exactly as James did with Snape in the
pensieve scene.
My question: Was this a mere coincedence or did JKR use this form of
humilation deliberately? Any ideas?

Megethia *turning back to lurk*