As of mojoPortal 220.127.116.11, if you are using a ModuleWrapper in left or right sides, you can enable it to show by adding these to your user.config
<add key="ShowLeftColumnOnSearchResults" value="true" />
<add key="ShowRightColumnOnSearchResults" value="true" />
and touch Web.config to make it reload the settings.
However it is not a site specific setting so it would affect all sites in an installation of mojoPortal.
Hope it helps,