Couldn't rez my Kubrow

[tprx]

Just started a T3 fissure in the void and 30 sec later, my Kubrow goes down. Now he has more than 1 min bleed out time, but I couldn't rez him, and neither could a team mate. Could it have been a radiation proc? Does the timer of a radiation proc stops when a player/companion goes down? Like I said, bleed-out time is more than enough for a proc to expire, unless the timer is stuck. My Kubrow has 2k health btw, I was surprised he went down so fast.