Can I completely reset /clear the bluetooth subsystem / device database?

Question

I have a Canon MP600 printer/scanner and connected a bluetooth dongle to it (the official Canon part) for the first time today. Unfortunately the user guide omits a few important details and the net result is that both a Mac Pro (early 2008, BT module included) and Macbook Pro (~late 2006, Leopard upgraded) appear to have become very confused about what to do with it.
Initially, contrary to its documentation, the printer ships with bluetooth security turned off. So, my Mac Pro connected to it happily without requesting a passkey and I printed a test page OK. The laptop wouldn't see the printer, though; it seemed that without security features turned on, the printer would only allow one computer to connect. I dug around in the printer's settings (it has an LCD screen so you configure it on-device), found the security option, enabled it and set a passkey (a 4 digit number in this particular printer's case).
Using bluetooth preferences on the Mac Pro, I removed the printer from the device list, then re-ran the setup assistant. It saw the printer, immediately recognising its name (the first time ever, the machine showed the address first, then the name a while later). It prompted for the passkey at the "gathering information" stage. In bluetooth preferences, the printer icon was showing 'Connected' status. At the "To complete the set up..." stage of the setup assistant, I named the printer, clicked on Continue, and watched the printer status suddenly change to not connected. The setup assistant re-showed the "To complete the set up..." page; I set the same name again; this time, I was taken to a page saying "You did not configure any of the available services for your Bluetooth device". Huh?! Extended information on the device in BT preferences says says that it's configured and paired, but not connected. Searching for the error message on Google produces literally no hits, which is a rare thing indeed.
Worse still, the laptop now does exactly the same thing. I've even tried turning off security entirely on the printer, power cycling it and rebooting both machines, but now neither will properly talk to the printer ever again. They just flicker through these strange "Not connected -> connected -> not connected" cycles and refuse to proceed with the obscure "You did not configure..." message.
Given that the Mac Pro successfully printed via this printer at least once, I should be at least able to get the thing to work again with security settings turned off (inadvisable though this is). But Leopard refuses. It's caching some data about the printer somewhere and this is screwing things up.
So, the short part of my very long question is: How do I totally reset the bluetooth software and/or hardware subsystem / device database so that it has no "prior knowledge" or expectations of devices which it detects?
Many thanks.

Answer 1

Replying to my own message for the sake of search engine archives.
I have not found a way to reset/clear the 'knowledge' that the Bluetooth system seems to keep of devices once it's talked to them, or, therefore, a solution to the strange Bluetooth setup assistant behaviour. Curiously, though, the 'not connected' issue with the printer doesn't seem to stop it from being printed to.
Having rebooted a few times, I printed a web page accidentally (! - I meant to save as PDF from the print dialogue box) and the device brought itself on line, received the data and printed, then dropped offline again. So it seems to be working fine. My guess would be that the online/offline behaviour is actually a normal feature of the way this particular device works, while the strange setup assistant behaviour is its way of saying that the device is already set up and working so it has nothing else it needs to do.