there is hardly a trace of the original Twenty Ten in the code :-(
you seem to have build some html validation errors into your theme;
http://validator.w3.org/check?uri=http%3A%2F%2Fblog.palmettoblended.com%2F&charset=%28detect+automatically%29&doctype=Inline&group=0
http://codex.wordpress.org/Validating_a_Website
fixing the errors might also fix the sidebar problem...