The Puerto Rican poster "Mellow Mood" said he saw Cotto saying the low blows were on purpose. Even though it's only word of mouth, it was a Cotto fan who said he saw this interview. Regardless if anyone saw this, I think one can come to the conclusion on their own that the low blows were on purpose. He was getting staggered and wobbled by a Zab Judah coming off two straight losses to Baldomir and Mayweather+ more than 400 days away from the ring because of the suspension.
This was an opponent seen as being on the slide and who didn't belong at WW. It was a showcase fight for Cotto that started as a nightmare. Without those lowblows, who knows what Judah would have done next.