Technicians Request view corrupted

Technicians Request view corrupted

After changing 250+ requests using the advanced search feature, a technician's view on the request tab has become corrupted.  It's only affected the one technician and I don't want to restore the DB as all the others are unaffected.

All requests, Actions, Settings on the header will not function.

Please advise - how to reset the individual technicians views (even to a default set of views).

                  New to ADSelfService Plus?