explosions too powerful

Explosions are overpowered by a factor of over 9000

What I expected to happen was...:
Be knocked away from exploding opject a few blocks

What actually happened was...:
Got knocked into the air well above world height limit and out of the boundaries of the world

Steps to Reproduce:
1. Place TNT or exploding mob
2. Ignite creeper/TNT/allow creeper to get close and blow up
3. Get blown into the air