Jude:6 And the angels which kept not their first estate, but left their own habitation, he hath reserved in everlasting chains under darkness unto the judgment of the great day. 7 Even as Sodom and Gomorrha, and the cities about them in like manner, giving themselves over to fornication, and going after strange flesh, are set forth for an example, suffering the vengeance of eternal fire.
Angels leaving their habitation and like Sodom and Gomorrha giving themselves over to fornication. Sounds pretty clear to me. Key words here: "even as". Yah, I read that in the article you posted. I had never seen those two verses linked together like that. I think the sense of it should be that the angels are waiting for judgement until the last day for their sins, even as Sodom and Gommoreah are waiting for judgement day to pay for their sins.