3 weeks ago I express posted my 'release of supperannuation on compassionate medical grounds' forms to DHS for approval.
Within a week and a half I received my approval letter. The next day I express posted the application form for my super fund along with my approval letter to my super fund.
I received the full amount for my surgery in my bank account this morning. The whole approval and release (I'm my case) took just over 3 weeks.
I hope other sleevers have as much luck with it as I did.