Unfortunately, Barry didn’t seem to connect the dots between the terrible thing happening to Wally and the terrible thing that was happening to Savitar the whole time he was trapped in the Speed Force.
Barry had to face off against Speed Force versions of his dead pals in the form of Eddie Thawne, Ronnie Raymond, and Leonard Snart before he found Wally and learned the terrible truth of the temporal loop.
We don’t know just yet who the man is beneath the Savitar armor (although you can check out our list of the most likely candidates), so we can’t say just yet what painful memory he was reliving, but we can bet that it was pretty damn awful.