Nice of the Webmaster to close down the Beth Din thread to prevent any response.
By the way I live in Judea - "West Bank" was the temporary name(just 19 years during the illegal occupation by Jordan) given to an area which enjoyed the name Judea for 3000 years - why do you deny your Jewish heritage and the cradle of Judaism?
I was going to say that knowing Mr Frei personally as I do I would tend to accept his version of events over yours.
First your provocative heading that the Beth Din sold the debt is wide of the mark - since it had no need to do so. In arbitration proceedings the arbitrator is entitled to withhold his award if the party or parties who are obliged to pay his costs fail to do so until those costs are paid. If one party fails to pay the arbitrator's costs or the part it is liable for the other party in order to extract the arbitrator's award may pay off those costs without reference to the defaulting party. That is not an assignment of the debt by the arbitrator it is part of the rules of arbitration. The paying party can then sue the defaulting party for the debt it has incurred and that has nothing to do with the arbitrator.
Secondly, your allegation that "The obvious conclusion to be drawn is that the rabbis do not trust the Beth Din, and need to see a physical piece of evidence" is beneath contempt. If you had bothered to read the procedure for the giving of a Get you will see that it is standard practice to deposit the Get with the Beth Din, which has ample storage facilities. The wife is then presented with a certificate, in Hebrew and English, stating that the Get has been duly executed and that the parties are free to remarry under Jewish law. The husband receives a similar certificate.
If the wife wished to marry outside the UK say in Israel the Israeli Rabbinate would insist on the certificate it is not a question of trusting the London Beth Din, upon whom you seem anxious to caste aspersions, but a couple who present themselves for marriage saying that they are in accordance with Jewish Law free to marry without any evidence to prove it.