You mean he should be called 'pretend' orthodox jew?
Just an Orthodox Jew. Being orthodox does not mean that you can't be a rasha. Most of the Orthodox are
good Jews but there definitely are some that are not.
Yigal Amir is Orthodox. He killed a man. There are certain things that identify someone
as Orthodox. You need to believe in the fundamentals and accept halacha as binding. You may encounter types that
are orthodox but lax in some things unfortunately or some who mess up big time, as in this case. Being frum is a general
picture. Obviously a person can reject religion, but that is not the case here. It's a frum jew with serious issues.