You wrote in the Point by Point Outlines 2:g
"(g) (Mishnah): This applies to Gilu'ach Taharah. If it was Gilu'ach Tum'ah, he can annul, for he can say that he does not want her to become repulsive;
(h) R. Meir says, even regarding Gilu'ach Taharah, he can annul it, for he can say that he does not want her to shave her hair."
- thus the husband can annul the vow if she shaves in either Taharah or Tumah as he doesnt want her to be repulsive - shaved.
Surely if she has already shaved in cleanness her vow is over and she is already shaved - so how would annulling the vow help at this stage! Very confused!
Thanks
The Tiferes Yisrael on the Mishnayos (#26) clears up the confusion and writes that when Rebbi Meir (or, as the Mesores ha'Shas on the Gemara writes, our text does not read "Meir," but rather it was "Rebbi") said that regarding Gilu'ach Taharah he may also annul, this refers to the time when the blood of the sacrifices has already been sprinkled but she has not yet shaved, and therefore her vow is not totally finished. Even though she is already permitted to drink wine, Rebbi maintains that the fact that she still has to shave also makes it considered repulsive to her husband, and he may annul the Nezirus in order to prevent the mere shaving.
(It should be noted that there is a difference between the "repulsive" of the Tana Kama and the "repulsive" of the shaving woman mentioned by Rebbi. When the Tana Kama refers to repulsive, he means a woman who may not drink wine. The Tana Kama does not consider a woman who shaves as repulsive, because she can wear a Pe'ah Nochris (wig).)
Kol Tuv,
D. Bloom