From the comunication from PE and the deletion of all ROMs, I suppose it's something about copyright or user data and they had to delete everything.Should anyone be looking, a quick and easy replacement for PE is DerpFest.
I am somewhat displeased with the way the PE project dealt with this issue. As a user I still have little to no idea about what actually happened, other than some second-hand knowledge and speculation on Telegram. PE has an official website, if they suspect a ROM is bricking devices to a point they feel like they have to remove all links from the site, then they should've at least left a warning on that same page stating that issue.
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There are no ROM files on PixelExperience servers, so you can't update (until a new maintainer is found).