Bloody and violent fighting in our pack

Following Pussy's violent death, the thread binding our pets together, allowing peaceful co-existence in our multiple pet household, unravelled so fast and so out of control. 

Left to Right: Bambi (female, spayed), Jappy (male,  intact), Woody ( female,spayed), Moymoy ( male, neutered), Trudis (female, spayed)

For two years, the dogs had no problem sharing a pad. Except for the occasional spat between Trudis and Bambi, where the latter would immediately assume a submissive pose, I didnt not observe any other kind of power struggle within the pack. 

On Saturday, after returning from weeks of confinement inside our house, Trudis was attacked by Bambi in their pad. Trudis was wounded and bleeding on her leg so we had to whisk her away and keep her on a separate dog house. Come Monday, it was Moymoy and Jappy who  had a fight inside the pad. It was obvious that Jappy had the upperhand, but Moymoy would not give up easily. He maintained his stance (although his eyes were turned away) and was matching Jappy growl for growl.   Fifteen minutes through the stand off, the humans decided to intervene before any blood is shed- Moy's most likely. Even with Moymoy outside of the dog pad, Jappy continued to bark furiously at Moymoy,  like he wanted to kill Moymoy. Moy was so scared and stayed on one corner and would not even move when we tried to coax him to cross the playground and transfer to the garage.

Now the pack is divided in two factions and are separated from each other until I figure out a solution. Jappy, Bambi and Woody are staying in the dog pad and are let out periodically in the playground. Moy and Trudis are roaming freely  in the garage right now. I intend to borrow a spare cage from the Animal Doctor's Clinic and put it in the play ground for Trudis and Moy to sleep tonight because the garage will be occupied by the car by then. I cannot let the dogs inside the house because I fear for the Human Pup's safety. He has been attacked by my two dogs in my Mother's house a year ago. All dogs that I live with see the Human Pup as a threat. 

I am trying to analyze the events that preceded the fights. The pack hierarcy has been disrupted, thats one thing I am certain. But do you think it was right that we intervened? If I had a choice, I would have let the dogs settled their differences on their own, that technique works like magic sometimes. But when it reaches the point where they will kill each other for the alpha status, what will you do?

This experience reminds me that the pack hierarchy is dynamic, just like everything else in this world.