Knowsbleed33
You know my name
Except he wasn't cut off from his power during his Huggernaut days. Cyttorak said that, due to his desire to be good, his power began to wane.
It's flat-out stated what Thor did in Mighty Thor #429. Despite his best efforts, Thor couldn't put a scratch on Juggernaut. Then, when the 60 second was up, Juggernauts force-field returns, and Juggernaut is back to "full strength". As I said, it's obvious what Defalco implied, his Juggernaut's durability was tied directly to his FF. When Thor threw his hammer, and Juggernauts FF was nufflied; his durability took a hit.
The 60 second PIS had nothing to do with his overall power. It had 100% to do with his FF being tied directly to his durability. Juggernaut himself confirms this.