SSPX's defense of disobedience

[Pfaffenhoffen]

Well, since you asked…

Pope Honorius I was anathematized by the Third Council of Constantinople for the heresy of Monothelitism. It was also upheld by Leo II.

Pope Formosus, although not accused of heresy, was declared by his successor Pope Steven VI as being unworthy of the Pontificate. He was later rehabilitated only to have the declaration reapplied by Pope Sergius III.

I did not know anything from these Popes. So I googled it.
If these are the 2 only examples, I thing that I can maintain the lack of heresy on the Popes, past, present and future.

From Wikipedia:

This anathema was later one of the main arguments against Papal infallibility in the discussions surrounding the First Vatican Council of 1870, where the episode was not ultimately regarded as contrary to the proposed dogma. This was because Honorius was not considered by the supporters of infallibility to be speaking ex cathedra in the letters in question (although the Roman historian Hefele and opponents of the definition believed that Honorius had spoken ex cathedra) [2], and he was alleged to have never been condemned as a Monothelite, nor, asserted the proponents of infallibility, was he condemned for teaching heresy, but rather for gross negligence and a lax leadership at a time when his letters and guidance were in a position to quash the heresy at its roots.

From Catholic Encyclopedia:

Pope Honorius was much respected and died with an untarnished reputation. Few popes did more for the restoration and beautifying of churches of Rome, and he has left us his portrait in the apsidal mosaic of Sant Agnese fueri le mura. He cared also for the temporal needs of the Romans by repairing the aqueduct of Trajan. His extant letters show him engaged in much business. He supported the Lombard King Adalwald, who had been set aside as mad by an Arian rival. He succeeded, to some extent, with the emperor’s assistance, in reuniting the schismatic metropolitan See of Aquileia to the Roman Church. He wrote to stir up the zeal of the bishops of Spain, and St. Braulio of Saragossa replied. His connexion with the British Isles is of interest. He sent St. Birinus to convert the West Saxons. In 634 he gave the pallium to St. Paulinus of York, as well as to Honorius of Canterbury, and he wrote a letter to King Edwin of Northumbria, which Bede has preserved. In 630 he urged the Irish bishops to keep Easter with the rest of Christendom, in consequence of which the Council of Magh Lene (Old Leighlin) was held; the Irish testified to their traditional devotion to the See of Peter, and sent a deputation to Rome “as children to their mother”. On the return of these envoys, all Southern Ireland adopted the Roman use (633).