I've just had an awful incident at nursery. DS (3) lashed out at another boy and grabbed and scratched him really aggressively. His mum was understandably really pissed off and a little later told me she'd asked her DS if mine had done it before and he said yes. She wasn't unreasonable about it but said she would be speaking to the staff.
DS has such a temper, he's not usually aggressive in this way and seems to have lots of friends, teachers say they never tell him off, but I'm worried this is the start of something and I desperately want to do the right thing to nip this in the bud. In the past few days I have noticed him being a bit mean to other children, like deliberately blocking their path for no reason. I realise this isn't that big a deal but it's spiteful things like this. He also has been having more and more temper issues recently and I am finding myself making constant excuses and realising that actually most other children don't behave like this as much.
In a way I feel for him as I had a terrible temper when young and I know the intense feeling of frustration and how awful it is but I of course so want to to teach him that hurting other children is just so wrong.
Up until now I feel like I've been doing ok at parenting. DS has been really tricky but I think I've been good at being calm and consistent etc. not perfect obviously. I am totally out of my depth here and terrified DS is turning into a bully.
Any advice on how to handle when something like this happens?