Turn off WYSIWYG (fckeditor) for certain pages

Under the edit area titled Body that you want to exclude from fckeditor

find the text telling you ID or path of the text area
e.g. The ID for excluding or including this element is: edit-body - the path is: node/1115/edit
go to
go in to the Visibility settings and add the path to the list of  
Paths to exclude/include:  
do not exclude IDs unless you really do want the exclusion to hold for all pages of that type.