I have actually issued a service request to Mathworks and the answer is no.
So there is no way to turn off cell mode in Matlab R2012b.
Also for whatever reason, Mathworks has renamed "cell" to "section".
On a more broader question. Does anyone know why Mathworks keep renaming things from version to version. For example,
(1) "cell" is renamed to "section". (2) Sometimes some functions are renamed to another name. (3) Function interface is changed so that it is no longer backward compatible.
Hard-disk space is cheap and so does it really matter if the old function is kept so that people can easily upgrade to new Matlab version.
Is there a good reason for renaming terminology or function?
Maybe I am missing something.