Yeah, the nose trick isn't the friendliest thing in the world. Usually, if I have trouble adjusting to a choke, especially one from behind, I don't want to sacrifice my leverage or my free arm to pull on the nose, so I just wrap my forearm around the chin and twist my body to turn it into a neck crank.
Sig by Toxic
Barnett - Toquinho -Werdum - "Nurmie"
Z. Gurgel - Morango - Rocha - Tiequan