That's weird, how did I get credited for what DWF said above??
And oddity in how I quoted, probably. Fixed.
As for Christopher
Clark's "trip" always struck me as somewhat "accidental" perhaps in taking the bumbling Clark shtick too far. Mostly I read it this way from how he tries to hide his hand and frustratingly hits a pillow (or something else nearby.) Even if it was on "purpose" on a subconscious level then it still "trapped" Clark into revealing he was Superman because there was no way he could explain away his hand being in the fire and not getting burned.
Whatever method Superman used to erase Lois' mind it was a pretty dumb thing to do on a dramatic level. Probably one of the worst uses of the proverbial "reset button."