That doesn't seem likely, presuming the 220 back works like other Linhof Super Rollex backs (I have them for the 2x3" and 4x5" Technikas). If you somehow managed to load the film with too much tension (never done that myself, not sure it's possible), I'd be more worried about tearing the film or stripping the gears in the film advance mechanism.
It's much more likely that the rangefinder is out of calibration, given the age of the camera, and/or you were trying to focus closer than the rangefinder allows.
Once you get the rangefinder calibrated, if you want to try to do close handheld portraits with short DOF, the technique that works for me is to prefocus at the rangefinder's closest distance, then move the camera back and forth while looking through the rangefinder, until the rangefinder shows the eyes in focus, then snap when you've got the right expression.