If a theoretical Event Horizon has been created there may be everything.

The problem is how to create an Event Horizon. Before it is created the energy moves in every directions in the whole volume of the Black Hole Like Object , stay inside of it and drives (may be absobed) the particles. The energy causes oscillations.

You have to know that Black Hole Like Object is not a Black Hole with an Event Horizon. It is just a massive star with moving particles with a maximum kinetic energy in a closed system. This closed system is only one difference between collapsing Supernova and Black Hole Like Object.
Supernova collapses because it cools (neutrino emision, radiation) - it is not a closed system.
If the emision stops - collapse stops too. It is energy conservation. It stops before the Event Horizon would be created.