Aaaaaand sending a saw and ordering cafe employees to cut into a wall is problematic for many reasons:
1 Most commercial leases do nott allow tenants to make structural modifications such as cutting into walls even if only drywall and nott studs without the landord's pre-approval.
2. Structural modifications done by unbonded non-professonals who are unfamiliar with the local building codes may violate the landord's building insurance policy.
3. It is nott a cafe employee's job to do construction work. If the firing was done even PART:LY because of staff failure to cut into a wall then they very well may have a wrongful termination claim.