MBSLynne
"I do think you'd have to hit pretty hard to damage a kid's spine. The slaps I've administered didn't even move a small child physically at all."
1) You don't think.
2) Do not hit a small child. Ever!
3) You administered nothing. You hit the baby.
4) If you still have small children, get counselling.
There is help out there for anyone who cannot control his/her temper.
The moment you begin to raise your voice or your hands you have begun to lose control. That's fixable.