I was hoping someone may be able to shed some light on this issue. I also experienced this with XenForo 1.4, but just lived with it.
Even if I clear out my all my redirects via cPanel, or clear out the .htaccess file... whenever I de-activate the board, I get a 302 temporary redirect loop. This only affects the homepage, ACP can still be accessed normally. It's quite unusual. I've tried changing the RewriteBase (and made sure to uncomment it) and the problem remains.
EDIT: I've also tried disabling all addons. Same results.
I can live with it, it just makes performing maintenance difficult as some things won't behave correctly when the homepage is trapped in a redirect loop.
Thanks in advance,