He doesn't have the authority (THY SOP) to call the go around, and the capt. won't (for whatever reason), so he's stuck with the unstable approach
I think common sense should have prevailed, not blind obedience to the SOPs.
The FO's (or any other pilot's) ultimate goal should have been to fly/land the plane safely. If an SOP risks bringing you into a dangerous situation I don't think it would be wise to adhere to it!