In Swan Song, Cas molotovs Michael with Holy Fire which makes him disappear but doesn't kill him. However, in Free to Be You and Me, Cas says that no angel dare touches Holy Fire because it will kill him/her. So, then, how did Michael survive?
shareHi, this is the wrong "Supernatural." This is about a TV movie (that I gather was to be a pilot for a series, but didn't pan out). You ask a very good question, but I can't remember the episodes well enough to help you out. The writers are usually pretty good about inconsistencies, so there may be some explanation in Swan Song (maybe because Michael is so powerful or some such thing), but I don't recall it. I just wanted to let you know that this was the wrong page, in case you wanted to re-post on the "Supernatural" TV series page. Someone may be able to answer your question there.
Good luck!