For the second time in nearly four weeks, Corona is the victim of a hijack.

Bolsow, a Bruglione in the Philadelphia family, shot the Don Kalevra, and managed to survive the backfire.
Right away, he did the things we usually see during a hijack, emptying the family bank and changing the family page.

http://img140.imageshack.us/img140/9296/corona2fe4.jpg

http://img243.imageshack.us/img243/55/gaysnd6.png

An hour later, Bolsow, after removing Corona's successors, shot at Devilscamp's Don Smokeweed, killing him but also dieing in backfire, thereby achieving his goal of downing, and severely mocking, Corona.

Despite the loss of all their spots, Corona restarted a few hours later, back in Corleone.