It would probably be a good idea to report that there is a disabled aircraft on the runway to ATS, so they could alert other aircraft inbound and possibly add a NOTAM. Haven't been to YLEG for a long time so can't remember if there is ATS coverage on the ground but it would have been nice for the stranded aircraft to also make such a report for others. There are a few alternates around YLEG to go to low on fuel, but somewhere more remote it would be nice to know well in advance if someone/thing is blocking the runway.
Even if someone had a handheld and just alerted inbound aircraft it would be something.
According to the CASA register, VH-OUV comes up as a Cirrus ...
He might mean UOV or UOU.