Could it withstand it? Could the crystal form from the Female Titan or the Warhammer withstand

 the rumbling? - Like would it get crushed or just pushed into the ground?
The only ways to destroy the crystal hardening that has been shown in the manga are being destroyed by another hardening like jaw titan, or founding titan scream

 just like when Eren undid all the hardening in chapter 122

so I don't think they get destroyed by:

 titan rumbling

they just get pushed into the ground