Survival Spectator

Forge version here.

This mod adds ONE single command:
/s

If you are in survival mode, your gamemode will change to spectator.
If you are in spectator mode, your gamemode will change to survival and warp back to where you became spectator.

This is only required on server-side. Installing it on client-side will allow this feature to be used in singleplayer only.

Discontinued! Use Carpet + Scarpet / Tweakeroo instead