Novus Ordo Watch has a good article on Pope John XXII, showing that accusations of him having committed heresy are dubious since the issue he brought up was open to theological debate. Pope John XXII is often used by those who want to assert that a pope can fall into heresy as an example of this case, and many are drawing parallels to him and Bergoglio.
The link to the SSPX article with an interview of Bishop Fellay is this one. It would seem as though my website system does not allow these new domains as links.
A filial correction was issued by prominent theologians and scholars to Bergoglio on August 11th. The SSPX joined in with Bishop Fellay and Fr. Brucciani, the provincial for the English chapter. This correction was made public today.