Barbarian Jump with HUGE knockback?

[Zongfoo]

I was just in a Hell's Cow game, and I watched this Barb using Jump really fast and short distance, but every time he landed it knockback'd every cow on the screen. Basically making him immune to cow swarms. How the heck would he have done this?

[kevolution]

using leap, as it is intended. no exploit or bug

[Zongfoo]

using leap, as it is intended. no exploit or bug

So a normal maxed-out leap will knockback every cow on the screen? Interesting.