Founders can't avoid a fork. Just like they forked bitcoin.
more than a fork here is changing a "default option", you only need to strip 2 line of code, recompile and then reconnect to the network... you get 100% block reward (if you have enough hash power to find a block in solo mining) and the others get 80% block reward and other 20% go to "founders fee".
read this:
https://medium.com/@heyrhett/zcash-miners-stop-paying-20-genius-tax-486d9f40884f#.ypvzby4gbdefinitely not a fork.