I'm not a lawyer, but my understanding of "deferred adjudication" is basically you ask the court to not enter a finding on your case (guilty or not guilty) in return for your being a good boy for a period of time. If you don't f*ck up again, you get the charges against you dropped. If you do, you get an automatic "guilty" for the deferred item, plus whatever you got busted for to bring it to their attention (plus the possibility of additional penalties for basically betraying the court's trust).
The court doesn't have to do this for you, but I believe it's discretionary.
Try this:
http://www.ticketassassin.com Very good site w/ resources. If you're thorough and do your research you might be able to get yourself out, but no guarantees.
About two years ago I got busted on my motorcycle doing 74 in a 45 (yeah, yeah, I know. . .) and wasn't eligible for traffic school since it was more than 25 over. I was able to research the hell out of it and determined that there was no legal basis for establishment of a speed limit on that particular portion of highway as required (I had to request the latest traffic & engineering survey for the road from DPW to show this, since none had been used, there was no basis to establish the speed limit - don't assume this applies in your case, it's only in specific situations). Anyway, I was all set to fight the ticket in court and while waiting outside to be called, the cop who stopped me showed up and we started chatting a bit. He offered to recommend me for traffic school (even though I'd have ordinarily been ineligible) rather than going through a full hearing, so when I got called in, he mentioned this to the judge, the judge asked me if I wanted to go that route rather than proceeding with the hearing and I just said "yes" (figured it wasn't worth it). That was that. I did my traffic school and that was the end of it.
Bottom line, this crap is all about the $$$. If they can get the money out of you and make you think they've somehow done you a favor, that's what they seem likely to do. Either way, you'll have to pay for the tickets. The single most important thing is to keep that crap off your insurance. That's where you'll REALLY get f*cked - if you end up with points on your license, you're in for a world of hurt.
Check that site. Maybe worth calling up an attorney too if you don't see any likely way to get out of it on your own.