I'd use: he tried to disorient...

When you try doing something: The computer is frozen. - Try turning it off and on and see if it works. When you try to do something: I tried to talk him out of going out with her. She's not a good person. Try + ing: 'experiment' something and wait for the results. Try + to infinitive: Make and effort to achieve something. I believe your sentences are grammatically wrong because of this. What do you think? 🙂

Those are great uses of "disorienting" and are grammatically correct! You could also use it in the past tense: I was disoriented by how many choices he gave me. He disoriented me by turning corners right and left many times.

Both are acceptable uses of the word. They make perfect sense, and are grammatically correct. Other options that might be more common would be "He tried to disorient me by ..." Great questions!