running about like a headless chicken

running (or rushing) about like a headless chicken

acting in a panic-stricken manner and not thinking clearly about what should be done.
A decapitated chicken may continue to flap about for a few moments before finally expiring.
References in periodicals archive ?
A rock of order, organisation and discipline in a sea of vacillation and near hysteria with Ieuan Wyn Jones running about like a headless chicken and Mike German slumped in his chair bereft of any idea at all.