Err You cannot "take over a network" like that. The only thing that 51% attack allows is a double-spend attack. Blockchain is just a blockchain, you can make a hardfork without having 51% of the network coins available.
It's not difficult. Espers is Espers, Cryptocoderz is still Cryptocoderz. Someone threatened to create an Espers fork on the Twitter channel @EspersCommunity. That's it.
Cryptocoderz is still low on communication. So everyone has two options: 1) Wait or 2) Fork the coin (but please change the name then). Simple as that. You cannot make the current Espers chain or Cryptocoderz "go away" just like that. Some day, updates may come. Very simple.