Shermana
Heretic
Worship of one Deity is Monotheistic, though, I personally feel that the term "Henotheism" does not fit Judaic belief. That being said, sure, it can be viewed as such, I suppose, but I question the intellectual accuracy of that description.
It's a matter of worship in the sense of recognizing the deity as a separate, independent power. Angels are worshiped by Lot, Moses, and Joshua without being told not to. However, these Angels are in the Divine chain of command, so to bow to them would be like kissing the signet Ring of a messenger (Angel means messenger to begin with, it's not a class of being like "god" would be, though this distinction is somewhat wanting in Greek). To worship Satan for example would thus be outside of this chain of command.
In Revelation, John worships the Angel but is only told not to because they are both prophets, of the same rank, why would John even worship the Angel in the first place? A temporary lapse on his part?
(Note: Worship means to bow down physically to in a display of submission).
Regardless though, it's not exactly an unsupported position among those who study ancient Israelite theology.