Sad news indeed.
The problem with that type of a/c is, loose an engine on T/O or near the ground as it seems in this case you're going down, period. If, and i mean if you get the prop feathered you will delay the inevitable. Remember you will have 5 minutes on the good engine, if you're lucky at max power. Also Wonderboom is 5500' approx, if memory serves me correctly.
Seems they were so unlucky. There but for the grace of God go I.