So after exploring a little bit in the Guest World, I do a /home to teleport back to my house. Where I found myself however is a weird area, where it seems the level size is 250x250 blocks (est), you take no damage, and every time you try to do /warp or /tpa - It takes you to the exact same spot in the center of the area. If I fall off the side of the map it just goes to a dark purple area and nothing happens, can't kill myself either, so... I need an admin or mods help.

Woa. This sounds weird. Have you tried /mvpt world because that should take you straight back to spawn.

Oh I relogged and /home put me back in the place I set it as. Although I have no clue why this happened in the first place, it is very odd... -.-

Sounds like a chuck error to me.