I gathered up some sand from a very close beach. Then i went and grabbed gravel from weird building that i could never figure out what it was. It had a meteor that crashed into it but the walls of the building was made from gravel. I already had clay, so i made all of these materials into grout and put it into one of my furnaces located at my used to be house and left for the nether. My Nether portal isnt close to my house as it is located at my old house but is still in reasonable walking distance. Once i got through i walk over to a very close wall and used my pick from tinkeres tool mod and dug a one by two tunnel until i got a stack of netherack. Once i had this i left and sprinted back to my house over the ice (the ice trail was previously created by frezarite armor). Once i got close i saw what had happened.
Would also like to mention by brother was on my server for a short time a few days before the day it happened and i had played a lot since then, And for some reason the ice didnt appear for him and it looked like i was just walking on water.
Sorry if this was to in-depth but thats like the past hour of game play before the incidient.
And before that i had collected the grout bricks (whatever they are called) from a local village that had a smeltery.