Complex sentence: The boarding axe's strike was measured at 33 psi, but Geoff Desmoulin claimed that the computer measured the section of the helmet just below the section where the axe's pike struck--implying that the actual psi for the strike was likely greater than 33 psi.
Split into simpler sentences: The boarding axe's strike was measured at 33 psi, but Geoff Desmoulin claimed that the computer had measured the section of the helmet just below the section where the axe's pike struck. This implied that the actual psi for the strike was greater than 33 psi.