By who?
While Saving Village in absence of naruto & Sasuke
I'm pretty sure his gang, Gai, Konohamaru, Lee and others could save the village without any harm receiving.
With Naruto and Sasuke gone, Orochimaru can neg diff the whole Konoha.
How? Gai would be enough for him. Even Lee can probably use 7gates now.
Edo Tensei. And Gai is in a wheelchair. Plus don't give Lee fanfic feats.