A hung jury would automatically trigger a new bond hearing.
Unless the defendant has a violent history or other serious charges pending, there is a very good chance that new terms would be set for bail and monitoring.
Phil Spector, the weirdo music producer who put a gun in the mouth of a woman and accidentally shot and killed her, was released on bail after a hung jury in his first trial.
Unfortunately for Manafort, Judge Amy Berman Jackson has decided that he needs to be in jail... on her case.
But, normally, what you said would take place. Manafort's situation is unusual--a simultaneous two-pronged prosecution on different charges in different courts.