Ma On Shan bus terminus has route N680 that goes to North Point, Causeway Bay, Wanchai and Central. IIRC, pretty much all public transportation options at University Station shut down when the station closes. You may have to take a taxi from University Station to MOS, which will cost around 25 to 30 plus 25.6 for the N680 bus fare.

At least it's not a suicide van.