Hopefully they can get it stabilized to try and complete the mission. The space telescope they are going for will re-enter the atmosphere either way so it’s worth a shot. This is a cool mission, especially since this will probably be the last air-launched orbital space mission we will see for a long time, maybe ever.

Would it have made more sense for them to claim it was a secret mixture of stuff that destroys concrete? If the engineers were obligated to check the structure because they didn’t know what was sprayed on it, that would have delayed construction, even if the liquid was pretty benign.