[touringmandan]

Let me start by saying I waited a full week to reflect on this before posting.
I own a Porsche/BMW service/repair/resto shop. I had a customer bring in a 1984 Carrera (250k miles) with a poor running issue. We checked the basic tune up and found that the distributor was coming apart internally. I grabbed a good used unit and installed it. She ran well again. I called the customer and told him what was going on. He asked if any new or reman distributors were available. I did some research and came across DistrbutorLab. I contacted Barry and described the failed distributor. He said "I can rebuild any Porsche 911 distributor". He said to ship it to him, and that he would check it out. He also said that he would require a $300 deposit by credit card to get started. I told him that I needed to get the customer's approval before we could ship it up.
Barry and I had been conversing mainly by email. I received several emails from Barry pushing me to send the distributor. He said that if I gave the customer a say in the repair, that he would "cheap out" and go with the used distributor. I replied several times that the decision was up to the customer.
The customer agreed to send it up for assessment. I did so. Barry called me when it arrived and proceeded to tell me what a piece of **** I had sent him.
I asked for an estimate, and he replied he couldn't tell me exactly until he took it apart, but that I was looking at $8-$900 at least. I gave him my CC info, but asked him to NOT disassemble it until I talked with the customer, and explained to him that the cost would approach $1,000.
I called and left a message for my customer.
In about 10 minutes, Barry called me back to say he had already disassembled the distributor and that it would be at LEAST $1,000 to rebuild it. I asked him why he took it apart, and he then proceeded to call me a bunch of nasty names. He said I was trying to "rip him off". He said that he woudn't work on anything ever for me or my customer, and that he was keeping the distributor unless I wired him $335.00 by Western Union.
I waited a day, and tried to reason with him over email, as he would get VERY hostile on the telephone. He told me that he took my position VERY PERSONALLY.
I tried to explain that I was just trying to find the best way for my customer to get his car back on the road.
As of today, Barry still has my customer's distributor and won't do anything without the $335 wired to him. Did I cross any lines? Am I looking at this wrong?