How to add a page redirect in Drupal htaccess file or otherwise?
I'd suggest you consider the Rules module as that "other module" you are looking for. Using an approach as described in my answer to the question "How to use the Rules module to implement a custom redirect for an outdated URL?" ...

Using that technique, you can also solve your requirement about it being "temporary" (that's just a matter of some appropriate rules Condition to be added in your case).