You might, Rianna. As you know, the river brings no safety from the Osokans but at least they haven't blocked it yet.
It is climbing up the far side that is the arse; the artificial banks are sheer.
You can give it a go, Tanic you can attempt a disengage any time you have an action... but if you and Galder both disengage then the Osokans simply swarm over the bridge; you two are keeping them there right now.
You had to swim down to where the walls were more shallow in the town centre, Galder; under the bridge there is no such shallowness.
(Incidentally, in case you are thinking that that river is damn dangerous for a civilised world, the safety systems that permeate Cynellise society have been turned off).
I don't need brain surgery here; just any crossing idea that doesn't use the bridge. Doon still has his tensile wire available; he just won't surprise the Osokans by throwing it over again.