In Wireless Sensor-Actor Networks (WSANs), sensors probe their surroundings and inform actors which respond collaboratively to achieve some desired application missions. Since actors have to coordinate their operation, it is necessary to maintain a strongly connected network topology at all time. A WSAN may get partitioned into disjoint segments, if a critical actor, i.e., a cut-vertex node, fails and causes the loss of multiple inter-actor communication links. The other actors close to the faulty node often exploit their mobility to autonomously restore the lost inter-actor connectivity. We...