That's a good point about the engine problem after it was shut down. However, there are a few important issues that are relevant. On further investigation the e

That's a good point about the engine problem after it was shut down. However, there are a few important issues that are relevant. On further investigation the engine damage was due to fuel leakage, it wouldn't necessarily be expected that a healthy engine would react the same way if shut down under the same conditions. Also, that failure occurred at Max-Q (maximum dynamic pressure), and normally it would be expected that the stage separation would occur under much, much less strenuous aerodynamic conditions (farther down range and higher altitude, much lower atmospheric pressure).