jakebohall - 8:42 pm on Aug 12, 2013 (gmt 0)
Thank you for the update. When you look in Webmaster tools, do you see any manual actions against your site?
While I would have to think that losing these links would have some impact, it seems like there are many factors at play.
I would definitely recommend a solid review of your backlink profile before making any decisions for new link development, removals, etc..