I was spanked as a kid and frankly I think it helped instill some discipline. It sure made me think twice about acting up. I'm wholly in favor of parents being able to use corporal punishment and I find it interesting that many kids who have been subjected to it have turned out terrific, and in fact are raising their kids in a stable, disciplined home.
Based on what I saw in this video: I'm not disturbed by the punishment as much as perhaps the extent or reported length of the punishment. I think long-lasting punishment can cross a fine line into abuse. I'd be more worried about the extent than the punishment itself.