Chachom,
“Rav belskys teshuva claimed that anyone who thinks they are giving the hair for more than ego purposes is a shotah. He writes that explicitly, that is hard to claim today.”
Sorry, obviously you failed to comprehend his point.
See the below link:
http://www.hebrewbooks.org/pdfpager.aspx?req=13614&st=&pgnum=29
Also, see his claim that it is not considered Avoduso Bkach:
http://www.hebrewbooks.org/pdfpager.aspx?req=13614&st=&pgnum=28
There is more in his sefer Shulchan Halevi though. But there is no link.
Also, in regards to Rav Vosner’s psak. His son claims that he agreed that there are what to be somech on and mailny aserred it as the issue of “Shemetz”. See below links :
http://www.hebrewbooks.org/pdfpager.aspx?req=13614&st=&pgnum=65
http://www.hebrewbooks.org/pdfpager.aspx?req=13614&st=&pgnum=75