Breaks gd-bbpress-tools signature in Topic->Between Posts

Hello, I have the ad unit for Topic->Between Posts and is calling for the ad just before the signature and in some pages if someone has a signature, it makes the signature look like is broken by putting it out of the post.

Is it possible to call the ad unit after the signature?

The plugin I use for the signatures is called gd-bbpress-tools.

Here is an example of the problem with the signature and the ad:

http://wowlazymacros.com/forums/topic/5-2-survival-fully-working-with-lock-and-load/page/8

Thanks in advance.

http://wordpress.org/plugins/bbpress-simple-advert-units/