A confusing "that" case...

Slinkerwink posted a great diary this morning that was hijacked and trashed by a person many of us look up to.

Here, "that" is immediately after "morning."

In "I like a car that goes fast," it is clear that I like a fast car.

But in the first sentence, is "that" referring to "morning" or "diary?"

I know that the way the sentence is written makes it obvious that "that" is referring to the diary.

But I thought that "that" must come immediately after the subject it refers to.

Am I wrong?

Is it ok to use "that" in the way the first sentence uses it as long as the intent is clear?

Please advise.

Thanks a bunch!