It was known in fighter parlance as "The Polish Circus Trick". Seems the V1 gyro/compass guidance system had a pretty narrow design envelope (i.e. AOB greater than around 25deg was never envisaged). Hence, tipping the wing toppled the gyro. Bingo.
Must be noted, that by the time this technique was being resorted to the V1 was obsolete. Gather it only took place a few times before the V2s started raining down.