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The speaker emphasizes that the South Tower's disintegration initiated unexpectedly and "peeled" away, akin to a banana, with the outer structure remaining intact momentarily. Such observations reveal that while parts of the core stood briefly, they too quickly succumbed, disintegrating into dust within a span of approximately 30 seconds.
Visual aids, including video footage from a helicopter view, are leveraged to demonstrate these phenomena. The footage captures the shadow of the inner core while presenting a close-up look at the disintegration process, substantiating claims that much of the steel seemingly vanished into thin air, leaving behind a hazy plume of dust.