Las,
“Is it takruvas a”z or not? ‘
That is precisely the whole back ‘n forth. It mainly comes down to the facts of why and where do Hindus shave their hair? What is the official belief behind it?
In a nutshell:
If it is for self-sacrifice purposes then it is not Takruvas AZ. And as one AKU”M expressed himself:
“So when a devotee gets his head shaved for the sake of god, he is renouncing his pride and power.”
If it is kind of an offering/gift TO the A”Z (as some individual say they do – see Chachom’s post from Wiki) then it may be.
It also depends if individuals do claim to “offer” the hair to the AZ – what impact does it have in the overall.
See # 6 from Rav Belsky on the below link:
http://www.hebrewbooks.org/pdfpager.aspx?req=13614&st=&pgnum=29