Yeah, just sell them, buy VTSAX and move on. I doubt you really bought them for the right reason (in-depth analysis, which very few people have the ability to do), so just offload them.
Of course, if you want to keep a couple as your play investments pot and see what happens, it would not be the worst thing. But really, Roth space is pretty valuable, so I would clean it up totally and maybe save up my change and buy a stock or two in a taxable account, if that's what you want to do.
Don't kick yourself about it. Just learn from it. You should also think through how you would feel if one or more of them had gone on an upwards tear. What would you do/have done?