tl;dr nerds from /qa/ raided /lgbt/, mods got irritated, shut down /qa/. Nerds migrated to SoyJak Party instead.
SoyJak Party nerds discovered 4chan was using a dangerously outdated version of PHP and compromised the site. They were able to get access to virtually everything on the site. There is a thread on SoyJak Party about it
Drama escalated when moderators were discovered using emails as firstname-lastname with a .edu because it made it very easy for SoyJak Party nerds to find and meme 4chan moderators.
Drama only intensified more when SoyJak Party nerds memed and forged fake .gov email's into the 4chan moderator images shared. It result in hysteria as conspiracy theory nerds went off the deep end.
tldr tldr nerds raid some gay place, mods get mad, nerds go ballistic and all hell breaks loose