Big bump, i know.
I also took accutane for 8 months at a dose of about 60mg a day in 2009. Last months i noticed extremely increased shedding. My derm said it had nothing to do with the accutane but i was just going bald (she based it on the fact my father is bald)... She never even warned me of this side effect and i certainly wouldn't have taken it had i known.
The extreme hairloss continued and i started taking minoxidil. Until by december last year it started slowing down noticeably. I was very surprised and took some photos and made a thread on another balding forum. They told me i had a juvenile hairline still, no minaturization at the temples and my hair looked fine overall. My hair had shed like crazy for 1.5 years and it still looks good and i even stopped minoxidil.
So, in my opinion accutane can accelerate or trigger male pattern baldness if you're genetically predisposed to get it (i read somewhere your hair skips a cycle so your hair is actually like 6 years older). If you are'nt and it causes hairloss i think it will recover almost to its old state. I do notice my hairstructure is a bit different and it looks a bit dead, but no receding or extreme tinning. (i guess i have my mothers genes, every man on her side of the family has a full had of hair). So it is possible your hairloss will stop.