URGENT: Stop infinite loop in workflow, cannot delete it in SWIA...

Hello,
I've created a new subWF.

This new small subWF have a LOOP until.

I've triggered the main WF and then called to the new subWF, but something is wrong is in and endless loop.

I'm trying to spot it but I can't.
I've deleted logically the main workitem, and the workitem of the SubWF with the loop, but nothing is creating new tasks...
I've even deleted the new workflow in PFTC and is still creating new tasks...

The condition to stop the LOOP is initialized on each new lap

How can I stop it ?

Thanks