Understandable but mixing your personal feelings into your business decisions makes for drama. Hey, if Howard is so busy that he can simply turn away business based on his personal feelings for a person that is great for him.
The only problem with that is that person is going to leave with a bad taste for RLMS and that negativity is going to spread like wildfire. Proof is in this very thread. He pushed some people the wrong way and they are making it known.
In conclusion, I would never mix my personal feelings towards someone and business. You are not only losing that person as a customer, but you are also spreading a bad name for yourself.