The sentence is grammatically vague. Your interpretation is certainly a possibility.
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AnonymousDoes the pronoun 'that' mean 'a tense moment' here?When I read the sentence, I don't take "that" so specifically. I think of "more than that" as a fixed expression meaning something like "in addition", "moreover", or "besides", in which "that" refers very generally to all the information stated up to that point.