Impossible to connect - Nether bug

Due to an Xp farm, there are hundreds of pigmens at the entrance of nether. Therefore it lagged when I went into the nether. I was unable to move because of the number of pigmens. 

I cannot join the realms since I went into the nether. Please make all the pigmens disappear and the problem will be solved !

Realms name: DeaDMachine666y