According to the report, the foam strike was known about and advised to the crew by mission control, but they were told it posed no risk to the orbiter.
Only fragments of the pressure suits were recovered, which would suggest the 'catastrohic event' was at an altitude and speed outside the suits' design parameters.
If there's one crumb of comfort, it's that the depressurisation was apparently so rapid that the crew didn't even have time to lower their visors - i.e. it was all over in a matter of seconds.