Unauthorised interference of common property and work of the strata committee

We would really welcome comments & suggestions on the following issue:

At our strata property this week a pedestrian entrance lock failed and the strata manager was contacted by a strata committee member for a suitable locksmith and the associated work order to have the lock replaced immediately. The locksmith informed the strata committee member that it was not possible to replace the failed lock with an identical lock due to new compliance requirements. The lock which had failed required a key to operate it on both sides. The lock installed to replace it requires a key for entry only.  A piece of perplex or mesh was to be prepared and installed within a few days to ensure that the lock could not be reached and opened from the outside.

The following day an unauthorised resident took it upon themselves to remove the lock and replace it with a non compliant lock which is keyed from both sides.