Ask HN: I don't have CS and feel flustered

I'm 27 and I have been programming a long while but am missing CS, it's hurting on the job front and confidence front. It would be a lot easier to have cool demos on git if I had some kind of CS related "solution" there to show. I'm becoming flustered of only being able to do CRUD solutions etc. I want to be working with people of higher calibre and I feel I cannot gain that entry (eg. Google as the prime example) without CS or some kind of micro-focus of CS. I'm afraid of tackling some topic (eg. linear algebra) then being shut down because there are 100 other topics, or that half of linear doesn't do me any good anyway, or I should be working on a meteor.js demo for practicality. Part of the frustration is that I don't work around CS people and so I'm stagnating in an area I feel is important to me. I first got my job (co-op and stayed on) and worked under a great engineer and had a great time but he left about 8 months after-ward and ever since then it hasn't been the same. I struggled since HS without a calculus/vectors course (and without foresight taht it would limit my entry into programs). I've since done some calculus but do not have credit. Should I just do it online, get the HS credit, and apply for CS at a uni? I think I will be taking too much of a step backward but I don't see how else I can shake this limitation.