I think that both had problems with injuries and and as such were easily replaced
I find both of these decisions very odd to be honest. Obviously I don't know the whole story.
Rene is under a rookie deal. Yes he got hurt minutes into his first game but with his contract status why not bring him to see if he can get over the injury issues. Huge upside.
Thompson seemed to be shaping up as a quality STer. Can't think he'd have been super expensive.
Agreed the injuries are the risk with them. But it's one thing to worry about that will expensive guys. When your talking about end of roster guys with upside, why not keep them around as you can have other league min guys right behind them just in case. Idk I'm not broken up by it and I trust this management group but these moves seem odd to me.