It's disgusting. I watched both head injuries in real time. I don't care what tests the NFL/team claims he passed, that poor young man had a serious concussion on Sunday (so bad he lost motor control for almost 1 minute) and then they put him back in that game and then another game 96 hours later. When the game started, my wife even said "I hope he doesn't hit his head hard again tonight- it could kill him."
The impact was so bad that it triggered an automatic infantile response. His brain stem was impacted so badly that his brain turned him into a 4 month old baby to protect his life. I've litigated several TBI cases and impacts like this will have lifelong effects in memory, mood, and general cognitive ability. He should have never been on the field.
The most ethical answer here is for him to retire. Concussions tend to have a cumulative effect. But, he will smile for the cameras, wink and say he feels fine. The team will rally behind him and keep sending him out there. We'll see clips of him practicing hard and throwing accurate bombs down field. The media will praise him for being "so brave", etc. The sick part is that everyone stands to make a lot of money by his continuing to play...including Tua. Who is going to advocate for his health (and life?) under those circumstances? So sad.