I have since spoke to both the FBAR hotline (they hqd no idea, just sent me to the email address). I called the IRS in London again yesterday, managed to speak with the same guy, and clarified a few issues. Apparently he misunderstood me and thought that the cash was somehow held by the university, not in a checking and savings account in my name (me, not make sense while scared out of my mind? Never!). He confirmed that I do need to an FBAR after all (and for all the previous years). I mention I was terrified about being hit with huge penalty fees, but he said if I explained the situation as I had to him, it certainly didn't sound like I had any intention of evading reportage or taxation or anything. Furthermore, as 'normal people' are not really the target of this, it is highly unlikely I'd get anything more than a slap on the wrist (his exact words were 'you are a very small fish in a very big pond'). Hopefully this is true, and hopefully the fact I'm a student and have acted swiftly to correct things will weigh somewhat in my favor as well.
I have also emailed the FBAR contact email on Monday, but haven't heard back yet.
Its going to take me a little while to get the forms filled out, though - I don't have all my statements from the last five years anymore, and my bank only goes back about 18 months with online statements. And then of course the sitting down and going through it all. I'll have to add a few sentences in my letter about how I apologize for the fact I was unable to send out the documents for a good week and a half, as I do not have the cash to employ an accountant or solicitor to do this for me.
Quick query - its just the forms and the letter I need to send, correct? Not like all my bank statements, right?
Also, am I right in thinking this should have no real bearing on my impending spouse visa application? (considering I applied for and received a student visa while an account had been and was well over the threshold, I should think not).