Since posting this, I have been presented with substantial evidence which defeat my claims. He proved to me that he could do what he said he could, he will not share his methods with anybody, and now he wants nothing more to do with this forum or me. He has also since given back my email account. Please don't email him about this, and forget about this thread.
Update: enough time has passed, I can now say that he was using a freely-available freezing program to disable accounts. No hacking involved.
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This weeks's new all-nettools.com challenge! This one is similar to what we had 2 weeks ago, but slightly more complex:
base64
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