Hello Decameron,
It does sound like a bit of a meltdown or outburst, to me, anyway. Personally, for me, when I feel strong emotions, eg. anger or stress, a lot of the time I don't know how to cope, so I have a total meltdown too whether its sensory related or just dealing with the certain emotion, and throw things as well (especially when I'm frustrated) and smash things. I don't know why, but I can relate to the urge or "itch" as you say, where I feel like I need to get physical and throw something, to make myself feel better. After I throw something, especially if it smashes, I instantly feel better too and throw one more object to calm myself down completely - I have no clue why it makes me feel better, but for me I think it is a sudden rush of energy, like an adrenaline rush, and I need to get physical and smash things to burn off that energy (I know I'm sounding quite violent, but this is when I totally lose it and am in full meltdown mode, I'm getting better at coping now, but I used to do this when I was really upset).
I haven't tried this yet myself, but maybe when you are on the verge of a meltdown, try going for a run to burn off that anger/stress/upsetness, whatever emotion you are feeling?? I haven't done this idea before, so don't know if it will work, but I've heard that exercise really is calming when you are angry or frustrated and is good to take a run or walk when you are stressed. Though, it will probably be hard to take a breather and stop getting physical and doing things you'd probably regret later, when you are in the middle of a full blown meltdown, so try to catch it early and use strategies (ugh, I used to hate the word "strategies" - I had depression and struggle with self harm when I was upset, so I have heard the phrase "try another strategy" way too often!!) sorry, I got a bit off topic there, and calm yourself down before it turns into a full blown meltdown throwing things stuff.
Easier said than done, I know, though. By the way, organisation skills is different for everyone on the spectrum. Some are terrible at organising things (I sure am, myself when it comes to making time to study and do homework at school!) and some are great, and some are just good sometimes and bad other times. We're all different, just like NTs and people not on the spectrum and thats all cool, so don't worry if you get frustrated at organisng things, everyone is unique at what they're good and bad at.
Sorry, this was a really long reply, I hope you don't mind!!
Jessie