Su'a Cravens and how it fell apart in Washington
In-depth article on Cravens' experience with Washington.
"General weirdness" is pretty unfair. "Lingering post-concussion symptoms" is much more accurate.
This is a person whose personality dramatically shifted after a bad concussion - issues with anxiety and paranoia that he recognized, but could not overcome. A lack of clear communication and understanding between the player and the team on whether he was coming back from a 30-day leave due to the post-concussion diagnosis. As a hybrid safety/LB, he was a smaller player filling a larger-player's role, and got pretty beat up - concussion, elbow, knee.
You listen to some of the stories of the anguish some of these players face from rehab, and the challenge of overcoming the personality symptoms from concussions, and there are definitely similarities.
Physically talented player, apparently dealing with significant family issues while suffering from mood changes from the brain damage.
Summarizing this story as "general weirdness" in a tweet is pretty catty.