What happens the next time something goes wrong?
But why should it?
Your pool worked flawlessly for the past 7 years or so... One of the most stable pools ever.
As I understood there was a glitch, because the server was overloaded, now that theres only this pool left, it should continue working flawlessly as it did before.
No it did not work flawlessly. I fucked up the transition to segwit myself and had a server overload yesterday. That's three blocks that should never have been lost. Never assume that everything will be flawless all the time. That said, when major pools fuck things up, they just silently reset things and tell people bad luck.