I experemented with 2 plants taken from the same mother.... I clipped each tip using the FIM technique on one plant and left the other as it was.... I noticed before harvest that my FIM plant had more flowers on it than the untouched one, Also noted at harvest that the FIM buds were tighter and better developed.

Not all is lost.... Be sure to clip the snapped end clean at a 90 degree angle with a steralised blade as to make sure that no infection occurs.