As far as I know, there are NO cameras along the route that would be the most direct - along Rafting Ground Rd to Moggill Rd then turn right. I don't think there are any cameras along that way - happy to be corrected if anyone knows of any.
But there IS a very obvious camera at the Kenmore roundabout - people in here have even tuned into it on the web, as have I. Great view of the bus stop too!
http://www.tmr.qld.gov.au/Traffic-cameras-by-location/Traffic-cameras.aspx?name=Kenmore+-+Moggill+Road+-+Kenmore+Road+%28East%29
And again, most locals know about that camera, as it was put in only a couple of years ago, along with traffic lights on the Moggill Rd approach, to allow cars to get out onto Moggill Rd in the morning peak hour traffic, when the traffic coming from the right is endless.
It would be a reasonable presumption that GBC would know about the Kenmore camera, and would also know that there are no cameras along the direct route as far as I know.
So - why go via Kenmore???
And just on the point of those rumours about missing hands and/or feet (or worse - yes, those rumours are around too) - it's not THAT easy just to "remove the hands". A surgeon could do it, a butcher could do it, and somebody with a meat cleaver could do it. But if just a knife was supposed to be used, then it ain't that easy - it's not the sort of thing you would do quickly. I don't know where those rumours started, but I have heard locals saying things like that with great authority, and "from the horse's mouth", reliable sources, etc etc.
As I said above - we need much more information from the autopsy, rather than speculating.