We mentioned the bottom armor in the recent IC post. We also made it clear in the post where the shell was first mentioned that it was impossible to see anything beneath it, including whether it was a roof or a box or what. Do you read IC posts before you make your stuff, or what?

Actually, the evoker's legs poked through the small holes in the shell. The rocks flying about underneath the shell started making a mess of said legs. 

Lets see... A massive earthquake wave hits a wall built up of countless blocks of stone, toppling it and countless structures behind it. What do you think happens when that all falls down?

The reason your character is in this mess is because he started meddling in affairs without being sure he personally was safe. Blundering about is risky. sometimes it bites back. Hard.

We see one very simple solution to his otherwise certain death. Have another evoker on the Othean side. Not a powerful one, but one skilled with basic control of air. Have him (or her) catch your baron. Problem solved. 

Alternatively, the nanosecond he touches the ground, he starts digging a tunnel. With space around himself. Sure, it might take a while to stop, and it might be troublesome to get back up out of the ground, but at least he'll live.