"Shut It Off!"

Despite the Ghostbusters' warnings, Walter Peck has the protection grid for their storage facility shut off. This not only wrecks their firehouse and releases all the ghosts they had in containment, but it allows the Keymaster to escape in the chaos. What's more, Peck has the gall to blame them for the explosion and have them arrested. This provokes a rare display of emotion from Egon.

Example of:
I Warned You