[josephdviviano]

If you can convince a CS prof at your target school that has pull that you can handle a CS degree, they can pull strings to get you in. Actually this was done for me to get me into the Neuroscience MSc as well (my undergrad was that lackluster). I was actually rejected formally from both programs before an internal memo written by said professor reversed those decisions.

At my school, I was required to take algos and data structures in addition to the program requirements. This was to make up for the fact that I wasn't already a CS grad. Way less time effort and money than a full CS degree! So maybe you can find a similar arrangement?

From my experience, if you're going to pay for more school, you should try to get a masters. A prof once gave me the same advice "it's more work (i.e., a BSc is typically 3-4 years) and in the end you will just have another bachelors". The nice thing about MSc programs is they tend to be more project-based and focus on higher-level concepts so you learn more useful / high-level stuff than in undergrad IMHO.

Good luck! There's always an alternate path :)