First of all: the Sea Graphics switch is a Placebo. Yep you heard it. Placebo. Nothing more, than that. People who suddenly experience a drastic performance boost ... well they are imagining things so to speak. But if it makes you happy...

Anywho: the Switch is available through the downloads/misc section of the EB website; and it should come with a brand new mod_0 or mod_1 .pak file. You should replace the other, corresponding .pak file in your EB directory with the Placebo effect and you'll have your Vanilla Seas back.