Hello Digdirt, the recall is only for a certain batch, and from the problem description it does not match with your problem
http://www.metzelermoto.com/web/TouranceRecall_COM_en.page .
Also, I did never hear of a problem with bulging sidewalls on front Tourances.
If I were you I would take a picture and send it by email to Metzeler directly asking for their comment.