I covered an event today with my Canon 7D and YN568EX when all of a sudden the flash changed from manual to E-TTL mode. I tried switching it back to manual using the in camera flash menu and speedlight mode button but that proved ineffective; It goes back to E-TTL mode every time I try to change it to manual. In addition, it won't enter manual mode even when the flash is not on the camera's hot shoe. Other than that, the flash is working fine.
Has anyone experienced this issue with theirs? What can I do about this?