BuddyPress.org

BP 1.5.4

I’m using the Group Extension API in a plugin.
Everything works great, except the delete button

The button is created with the expected href + nonce
but when clicked, the result is: the user is redirected to the url in the button.
Instead of the expected redirect to the group home page.

Here are the snippets:
https://gist.github.com/3353337

Any hints ?