I found my original thread:
http://986forum.com/forums/general-discussions/48301-troubleshooting-sorting-possible-aos-issue-maybe-something-else.html
The other thing I have heard is that the 986 is very sensitive to oil overfilling, such that I have heard that at some point the digital oil display was calibrated so that the top bar/max full indicator was calibrated to show full with slightly less oil than before. I can't find the thread with this info though, so it may be me just mis-remembering what I thought I read.
When I blew my smoke bomb I came through turn 8/9 in third and then took 3rd right up to the redline and then shifted into 4th and that was when it happened. Since then I have been more conservative about my shifting, usually shifting between 6000 and 6500, but I am doing even more WOT now than I did back then.
Since my smoke bomb (on 9/7/2013) I have done 13 additional track days with no smoke bomb.
I was majorly freaked out but I think it is resolved with not running the oil at the top. I have heard about folks that setup a catch can after AOS, and then they fill the oil to the full mark, and then within their first few sessions the catch can fills up to a certain amount and then oil goes down a certain amount and then it all stabilizes there.
If you have a 2003 or up Boxster then you can more easily retrofit the larger AOS (super $$$ though) or if you have a lower year Boxster it takes a lot of fabrication and finagling to get it installed. I decided to just keep the stock one and keep an eye on it.
Steve