iamlost - 6:17 pm on Dec 16, 2012 (gmt 0)
You are extremely unlikely to be able to get Google to do a manual override on an algo determination.
You mention that 'raunchy' sites are hotlinking your images. First: why do you permit hotlinking at all?
Second, as this may (note may) be a cause of the problem I'd cut those sites hotlinking off to see what effect that has.
If it does remove the safesearch filter effect then you face the business decision of which traffic is better: those sites or Google search.