The chemical reactions and pathways resulting in the breakdown of polysaccharides in the ascus wall that contributes to the release of ascospores from the ascus.
Synonyms:
exact_synonym:
extracellular polysaccharide breakdown involved in ascospore release from ascus; extracellular polysaccharide catabolism involved in ascospore release from ascus; extracellular polysaccharide degradation involved in ascospore release from ascus