gunner - you're obviously quite experienced in the legal system. In your experience is it likely a grand jury wouldn't move a case to a trial with the following particulars;
-2 young adults have sex after a night of drinking
-female claims sex was not consensual
-no overwhelming indisputable evidence the female is being dishonest
In no way am I inferring this is the simplistic version of the AJ case, only discussing grand juries in general.
My one experience serving on a grand jury was every case presented was moved forward with none being rejected. I left wondering why the grand jury even existed. Would be interesting to know what percentage of cases presented to grand juries were not moved forward.
http://scholarship.law.cornell.edu/cgi/viewcontent.cgi?article=2544&context=clr
This article from the Cornell law review states "Grand juries have been abolished
in a large number of states and in England" and presents the grand jury system as strictly an asset to the prosecuters.