You should definitely file a report. You were put in an impossible situation, where you were almost as likely to come to grief by going around as you were by landing.
I have been taught that one is committed to land once DA or MDA is passed.
I think that is poor teaching. That is only the case when you pass 'Single Engine Committal Height'.
For what it's worth, I would have gone around.
MJ
Ps. Just re-read this part:
...land and stop before the intersection of 18 (which is only 180m from threshold) uses break break and instructs other aircraft to depart from 36.
He cleared another aircraft to take off on the same runway, in the opposite direction to you landing??????
