Stuck in a hole on a Minecraft server?

I am stuck in a hole on a minecraft server. I cannot break any blocks, but I can place some. I cannot kill any mobs either. I am stuck in a ditch, and I am stuck with one zombie who keeps following me around, pretty annoying.

Anyways, I was wondering if there was a way to leave without killing myself or spawning elsewhere.

I cannot /warp out, and I cannot do /spawn, because there would be no way to get back to the place I was heading to.
Added (1). I found out that Essentials Protect is on emergency mode. I'm not the owner, but is there a way to turn it off?

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