Sorry for the inconvenience this may have caused you. To retrieve heroes stuck in RECON is very simple

You have to send another RECON mission with different heroes to retrieve the lost heroes.(The second recon will come back with the first recon when the second recon is over)

 Players who experienced this issue will get 5 RECON-Extra EXP % and 5 RECON-Reward % Increase items per lost hero.Compensation will be sent directly to your inbox