User blog comment:Eobard95/BARRY'S GONNA DEFEAT SAVITAR BY RESTORING THE PRE-FLASHPOINT TIMELINE!/@comment-26537965-20170512180617/@comment-27700324-20170513031842

No, Savitar would happen no matter what. Barry would eventually create the time remnant that became Savitar. Maybe some time in the distant future. It was inevitable that his godlike powers of creating life like that would come to haunt him whether he changed the timeline or not.

As for Caitlin, if it was really because of the particle accelerator, she would be able to use her powers much earlier. Also if you say the whole "Cisco took a while to discover them, so would she" thing, then i'll tell you that during the Killer Frost episode, she had said that Alchemy gave her cold powers, maybe he can take them away. So the missing husks are those two.