Could Rumblings From Plutons be as Ominous as Rumblings From Volcanoes?
I searched the mentioned earthquake, and if i understood it right it is attributed to a fault line formed by two laterally moving crustal units (a "normal fault"). Mount Kinabara itself is not to blame, though the earthquake triggered landslides as secondary effects at its steep flanks. I also found papers on the geological history of the area that offer explanations of the causes of the earthquake. As to portents and the future, if only i knew ... :-)

There is this publication (Wang et. al. 2015, open access) about the earthquake attributing it to a normal fault directly beneath Mt Kinabalu. The epicentre's position is marked on a profile in the publication.