Please do try and keep "up to speed"
Turning off the navigation aids created the possibilty for the failure which seems to have occurred here, and surely cannot be justified other than on cost grounds.
The 28L Localiser was radiating normally, the 28L Glideslope was OFF as the landing threshold is in the process of being moved to the west. PAPIs for the new threshold were working normally and providing the glideslope guidance in severe VMC.