try not to dislodge the clot & quikstop while applying gentle pressure. If it does come off, re-dip the toe into the powder, making sure to completely cover the open area, getting a good, deep coating on it. If you need to, hold the foot in a small bowl or container of the powder and keep it...
keep applying the quikstop or cornstarch. If it comes off & bleeding starts again, do it over. and over. and over -- however long it takes. It should eventually stop, and it is FAR LESS painful & traumatic than cauterizing. I hope your roo recovers completely.