Hmm glad to read this as Louis has started throwing tantrums as well. Mainly when he's tired but the little terror has started to hit me now as well! and throw things!
It's obviously frustrations for them - I'm not sure how to help - I just try to distract him or give him cuddles.
It's frustrating for me though because my family all tell me to smack him - which I'm not going to do - as they think he'll turn into a nasty little boy.
I'm hoping it is just a stage also!