Before new vents on top of the ridge open we must first see earthquakes in depth of 0-5km. That would indicate that the magma is pushing through.
Alternatively, it can go relatively quiet through the old established piping and blow the current cone to shit. With what is going on at the moment we could easily get another Taburiente. In this case the faulty flank would be blown to pieces, before it gets the chance to slide to the ocean.