If they can't force regen the dpf, then it won't self regen either. I would be trying to spray a dpf cleaner into the dpf, but I'm guessing you won't have any tools or a friendly garage to help you with this.
If you were able to locate the dpf pressure hose before to dpf and remove that, then that's where you would spray the cleaner into. Apart from that, I think your best getting recovered.