I'm not really sure how much GPA matters here. LECOM is a big school. There are probably a lot of people with low GPAs. My question for you is what year are you? Did you take Step 1 yet? If so, how'd it go? You don't really mention clinical grades or boards, so I'm really wondering what year you are.
If you are very early on (like MS1/2), there's still a lot that can happen for you. First off, you might change your interests (I know, I know, it never happens right?). Second, you might do very well on boards, provided you put in the effort. Third, you could still get involved in some research, especially during clinicals. That's what I did, and it was much easier doing research in 3rd or early 4th year than 2nd year.
If you're an MS3, then how'd boards go? You took USMLE Step 1, right? You're further in the process, but having good scores will make DR somewhere very doable for you and you can go for an interventional "residency" afterwards. At least then, if you don't manage to get interventional, you have DR to fall back on with some procedures in the right setting if you become comfortable with them during residency. I agree with the others that an extra year might not be as useful as going DR and then interventional, same time spent, but at least you're getting paid to do it. But who knows, maybe you have connections with a radiologist at a big center that you can do a ton of research with over the next year with a gap year.
Now if you think you wouldn't get DR, you could always apply for an internship as a backup, then reapply. Only you can really judge whether this is worth the risk to you as opposed to doing something else.