You know, I slept on this and had to come back and post again. This deal with parents forcing their children to do something with their life they don't want to do is pretty pathetic.
I became a cop almost straight out of high school because I enjoyed the law field. However, my mother was a prosecutor and has been an attorney for a number of years, and I couldn't see myself being content 'inside' the court rooms all the time. I wanted to be in the excitement of it all. So, I became a cop, founded a couple businesses to help prop up the low income, and started working day in and day out.
However, it wasn't long before I realized that there were a lot of people out there doing a lot less work than me and living a lot better life. I started to think about how I had pissed away the prospect of going to college after high school just to fulfill a quick enjoyment.
However, I did learn something that most parents don't allow their kids to learn. I learned what it's like to have debt, to provide for others, to work rotating shifts, to put up with society's destitute, and ultimately what it's like in the 'real world.' In the end, I don't regret doing what I did, because it made me have much more respect for the opportunities that a good education can award you.
Your dad forcing you into this isn't going to help your life. In fact, judging by your performance the first year of college, he's hurting you more than he's helping you. Had he injected this idea into your mind and allowed YOU to decide if you wanted to do it... you may very well have. You'd possess that passion that's required to pursue any field of study.
So, with all that said, I must tell you what I would do. I would tell him to keep his money. There are millions of adults - young and old - in this country who go to school on their own. It's not the path of least resistance between point A and point B but it's definitely achievable. Don't let him strong-arm you into a field of study that you genuinely have no interest in.
Tell him that you appreciate him wanting you to succeed in life but you're not happy with where things are going. Ask his good graces to allow you to pursue a different major and if he tells you no... tell him that's fine... you'll take out the loans you need and work to provide what those loans won't.
Just my two cents.