G' Day robeubanks,
These kinds of damage would cause the target ship to drop out and operate independently of the flotilla until repaired. She would be expect to attempt to rejoin the formation as quickly as possible if she is able. Similarly, the formation would maneuver to assist her return unless making or defending a torpedo attack or required to screen capital ships.
One additional nuance; a Bridge hit on the flagship (lead or first DD or TBD in the formation) would cause the formation to follow her maneuvers for a Game Turn until repaired or command could be transferred to another ship in the formation.