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.
Even so, that still makes it all about Clark vs. his own subconscious, and reduces Lois to a passive spectator. It's a more chauvinistic approach to the storyline. In the original Donner version, Lois is a stronger, smarter, more equal character.