When a person is "out of control", it means that they do bad things like drugs, fighting, cheating, and so on. It also means that they can't stop doing these things. For example, if a famous actor just got arrested, you can say:

He's out of control.

To "spin out of control" means to quickly become more and more out of control. A person who's spinning out of control keeps doing bad things and getting worse and worse.