Alex was obviously concerned about Cody getting shot but simultaneously relieved that his wife was safely out of the way now as soon as they left. Unfortunately, their leaving seemed to spur Three's fury on and he began fighting back harder.
Fighting him had never been an issue before but that was back when there were established rules about ending a sparring match. Those obviously didn't apply now when he was clearly fighting for his life.
He needed to end this fight quickly though. He had no idea how much longer his friends would be out cold.
Alex didn't want to see them get wiped again. If they woke up, they would go back to the same cycle of using the activation and deactivation words over and over and that would not only be inconvenient for him, it would probably scramble their heads.