Em, first sorry for my english. It’s not my native :p
My site was completly inoperative. I couldn’t do anything for like 5 minutes so I wrote here. After that, I opened my site from history list and refreshed. It worked. It stopped this plugin from working (I really couldn’t open a single page).
But now everything works good, thanks for answer by the way
(imagine now that your site is totaly unavailable, u can only access ftp and deleting directory don’t help ?? )