Ok, have had time to think on your issue ...
A couple of more ideas … the following kinda sketchy and would need further 'fleshing out', but the basic ideas are here ...
you evidently work in higher ed … jc, community college, university …
Are there other teachers who want to use Moodle rather than BB?
Got a Computer Si department?
Hmmmm …. sounds like the entity/college + IT (whatever higher powers that be) need to open their eyes to Linux/Open Source. Not just for you and a Moodle, but for student (undergrad or grad) real world experience. What if you found 5 or so that wanted to use Moodle? What's the threshold point where IT becomes responsive to needs/desires of Staff?
Find students in Computer Sci networking/server that need real world experience before graduation (plus some true experience in something other then Winders). Wonder what you could put together?
And another - shared service arrangement - remotely hosted VDS whose cost is shared among x number of teachers. Each has their own Moodle - they admin their own Moodle. Could have that one server respond to multiple registered domains. Those X number of teachers also share the cost of a single server admin hired to assure the operating system is up to date/maintained and who does Moodle upgrades. Their job is not how to use Moodle. With X number teachers using + Moodle community as resource that should be covered.
Either one of those could defray the cost of an individual teacher using a VDS on a remote system with enough umph to run the code.
Now am not volunteering (and not bragging either - even though this is about a Texan and Texans), but I help some 15 ISD's in Texas with their Moodles. With the right setup, I can, with one click of a button update the operating system of all 15 servers - takes 2 minutes to click, then wait for 10 or 15 minutes more. In a matter of minutes, I can upgrade each ISD's Moodle with the latest/greatest fixes and patches. I've left the admin of Moodle to them ... many would disagree with what I would propose anyway!
Such collaboration is possible - and affordable.
And here's one more ... what about home schoolers? Saw a posting here in Moodle.org from a lady that was a home schooler ... shared resource ... share server ... shared cost.
It can be done ... question is, can one think outside the 'man made boundaries' of 'traditional server/network' and 'traditional institutions of learning'?
Ok, off soap box now! Consider this 2 cents worth!
'spirit of sharing', Ken