I've had this happen after getting assigned on a short leg. Massive negative balance in the UI, locked account, angry margin call emails from RH. The messaging

I've had this happen after getting assigned on a short leg. Massive negative balance in the UI, locked account, angry margin call emails from RH. The messaging around this is terrifying because it is all boilerplate risk management stuff -- nothing you'd expect if you were naively engaged in a controlled risk spread. The thing to keep in mind is that RH won't let you engage in infinite risk positions. So, if this happens, take a deep breath and maybe re-read a few sections on Investopedia.