In Bahamas, there were stories of how awful the jail SBF was held is, but only one (iirc) managed to let out the kitty that he was held in infirmary, and not in the scary cells every story talked about.
One reason to stay within the law is that even due process can be a rather nasty experience, and generally to be avoided if possible. The threat of rape in US prisons is repeatedly referenced in "cultural products" coming out of LA. It is pretty odd when you think about it: systemic abuse is taking place and blockbuster films reference it and apparently the government doesn't care.
So sure, the bail is for preventing flight. It is not about justice. But ultimately the "justice system" is also not there to do "justice": it is ultimately there to insure societal stability and harmony. When a people get the sense that "the system" is stacked, and gives preferential treatment to special people, it undermines the very purpose of a justice system.
So tptacek, the justice people are talking about is simply the obvious this: If Joe Schmoe had pulled the scam of century, he would have had ample time to meet his cell mates in Bahamas in "scary prison", and, also get to know the fellows in cell block whatever over here, in the land of "sodomy in prison is a feature not a bug" USA.
That kind of justice.