Correct, there is no "Auto perform action" checkbox on the Find section of the Bust Players Out dialog. I most like omitted it because it doesn't make as much sense as on other dialogs, since a hitman must [usually] be selected as well. But it could be added.
On the Preferences tab, in the Behavior section, if you uncheck Allow selection of hitman when busting players out, the Hitman selection pane will not show on the Bust Players Out dialog.
Thanks for the tip