I'm sure this will probably end up a "no", but I thought I would throw it in to make sure the devs are aware.
I normally use IE Tab Plus (FKA: Coral IE Tab) for any browsing that absolutely requires a site to be rendered in IE. As such, it was my first choice to verify that the new spoiler code update indeed did work in Internet Explorer.
However, for me, the spoiler code is still broken in IE Tab Plus. To be sure, I went and loaded the real Internet Explorer. Sure enough, the code works there. I'm not sure what the difference is (I thought IE Tab Plus just used the resident copy of IE on the system) but it seems the spoiler code is still broken for IE Tab Plus users.
I really don't know who would even want to load RPG.se in IE Tab Plus, since it works perfectly fine in Firefox, but again just wanted to make sure the devs are aware of this issue so that they can decide how (or if) to address it.