surrendering when you can come back?

Like, of course you can come back, but thats not what i mean.

I've noticed when the enemy team surrenders, they just go on all out spastic on us. thats normal, dying again wouldnt matter since you're surendering. the weird part, is when they go spastic, a lot of the time they get close to actually killing all of us. They dont, since theres barely any time, but my team is doing the same thing, so its a 5v5, and they woudlve won it. I know the factors you may be thinking of why, but ignore that for a second. what im trying to say is, is it possible you are very much holding yourself back? im not talking how to get out of an elo. Like say your losing and your pushed to your nexus, theres a reason for that, your team kept dying and eventually it came to this. then suddenly, you all rush out to greet tem and kill everyone without any trouble. It may be because they were focusing on the nexus, but games ive dont its still got a decent amount of ealth so theres no way to finish it without fighting, so they all stop to fight and...we kill them all. I just think its weird how you can be aggressive when the games neutral, but when something important is at stake (or nothing important, so not inbetween) something just clicks.

Has this happened to anyone else?