mate, I had the exact same problem with a B5 A4 1.8 (P reg) and it lost all the fluid on the motorway. I had to continue with no replacement fluid and nowhere to stop to get the belt off on the Glasgow M8 "Clearway" where the signs state there is no stopping for 36 miles.....I ploughed on, and the pump actually caught fire, no sh!t bud.
Cruising at 70 with 4 passengers late for a flight, the engine compartment started pissing smoke, then the flames appeared!!! I was forced to stop and bail out - closing a carriageway of the M8 (not a popular breakdown in heavy traffic, but hey.
I would defo take the belt off, but it'll steer like a Panzer....you will however build arms like Arnie!