It is no suprise that a "high risk" ( even most so called high risk HPV infections do not progress to concer) HPV infection was found.  More the 60% if men with male sex partners do.  Most such infections resolve without specific therapy although, as you point out, the higher risk types do take longer to resolve.   Since there are no good data on how often these infections progress or how to best manage the infections, recommendations tend to vary, even within experts.  If your test in totally norlal, i would follow with repeat PAP smears but not push for high resolution anoscopy.  If the PAP is abnormal, HRA (which you correctly identify as the current gold standard for determining the presence of anal pathology) whether to set a baseline or for treatment which would vary depending on what is seen is more reasonable.

I wish I had better answers for you.  I hope these comments help.  Take care.  EWH