Both the formations are overlapping with each other.
This clash of energies created a vibration throughout the room. And that vibration is not just limited to the physically tangible objects like the walls, even the energy barrier over the wall is also vibrating.
The spiritual energy moved chaotically as both formations worked together to create a field of gravity in the middle. The gravity part of the formation created a core area where all the energy gathered. It created a gravitational pull and tried to pull the walls of the room.
In addition to that, the spatial formation started messing with the fabric of space in the surroundings. The excessive force of attraction and the excessive disruption of spatial fabric soon created enough chaos to tear the whole room apart.
Sam stood in the combined core of this formation unaffected by all of this.
The first thing that went away is the energy barrier. Then the wall started collapsing bit by bit.