There is no immobility described
Also, in the article, sleep paralysis is mention as an aspect of hypoglycemia, as you mention, but an aspect along with other aspects like hallucinations, lucid dreaming, body jerks etc. Sleep paralysis can happen during this phase, but is no the reason why the other symptoms can happen. It is part of the condition not the condition
Dude… its almost a week old post… just scroll by it!