Just looked through the code and it doesn't prevent widgets from being used again. All it does it delete the current widgets when you run it. Did you modify any other code that could cause your issue?

No :-(

I'm was using the widget plus plugin that was over propagating my widgets to all users (meaning adding layers of the same widgets if already in use).

You're remove plugin was perfect > cleaning all profiles to blank, then propagate a set of widgets...

Except that it (widget plus) doesn't propagate anything anymore and all my profiles stays blanks...

It says everything went ok though, and was working perfect seconds before...

That's why I was asking this question...

Haaaa Yes !!

Worked it out : the Widget Plus would only propagate locked widgets...

Change that status and now it's just rollin'

I can drive my users pages layout whatever I want, I'm the king, yeahhh !!!

(just kiddin, that fixed layout is a client demand)