Based on the Smartoffice article and FH media release it looks like the Chinese offer was subject to further due diligence and was non-binding (i.e. a risk that further due diligence would not result in a firm bid).
When you are burning through $3m+ of bank's money a week you can't wait forever for a tyre kicker to make a decision - you have to make the tough call and liquidate if that is the path which leads to a more certain return.
DSH Price at posting:
35.5¢ Sentiment: None Disclosure: Not Held