Q. Re-question 2651 (Regarding someone unable to take a haircut before Pesach since the barbers were closed. If his long hair is bothering him and there may be also an issue with tefilin; can he take a haircut before Lag Baomer. We answered: Horav Shlomo Miller’s Shlit’a opinion is that, although not taking a haircut now, may involve some strain and distress, we find longer periods of hair growth that are acceptable in Halacha. Therefore one should wait until Lag Baomer.)
Thank you, but I was asking about someone who follows the Arizal, where is a mere chumra, if he can be lenient and get a haircut earlier than Erev Shavous? 
A. Horav Shlomo Miller’s Shlit’a opinion is that since this is only a minhag lechumra (stringent tradition), one can be lenient during this unusual situation and take a haircut after Lag Baomer.
Rabbi A. Bartfeld as advised by Horav Shlomo Miller Shlit’a