For those interested as to WHY the landing may have been attempted, i'd recommended having a read of Mandala999's post on this (spotters) website.
GA618 Overruns Runway At UPG — Civil Aviation Forum | Airliners.net
(Note Gerry is a well respected analyst on Indonesian aviation).
I find comments like this not at all surprising:
It is also alleged that a Garuda crew has been grounded due to going around somewhere to avoid a Silk Air jet that was still on the runway. The grounding came as an instruction from the minister after he received an SMS from a pax on the Garuda jet. Whilst we do not know how true this is, pilots in Garuda are greatly disturbed by this and is the hot topic of discussion amongst them.