jenxi on "[Plugin: WordPress SEO by Yoast] Error 503 when deactivating plugin."

WordPress version: 3.5.1
WordPress SEO version: 1.3.4.4

I did this: Deactivated the plugin.

I expected the plugin to do this: Deactivate.

Instead it did this: Error 503. Service unavailable.

http://wordpress.org/extend/plugins/wordpress-seo/