This made me chuckle. I'm sure Twitter has made some missteps, but it's tough to let people go. They are putting just as much trust in you as you are of them. It becomes more tough as you grow, but the sting is still there. You want people to feel like they are worth something. And when you fall short it's a hit to everyone including management. I've been on both sides of these and people move on. This too shall pass.