command line to disable bayes?

[Keith Whyte]

Is there a way, or a work around to disable bayes on the command line, 
similar to using
spamassassin -t -L to disable Network tests?

i realise i could copy my config , disable bayes in the copied config 
and then use -C, but maybe a command line option that allowed the 
specification of a single config directive could be included in a future 
release?

I would like to use -t -D to test rules, without the possibility of 
having bayes learn something wrongly

thanks!
Keith.