Not a writer I'd thought of, but I like it!!
As mentioned earlier, the quickest, easiest solution is Wally was corrupted by the Dark Multiverse.
He's beaten it now, and he's used the Dr Manhattan powers to re-set the DCU.
Now here's a new monthly series with Wally as the Flash including Linda and the kids, plus appearances by Roy, Garth, Donna, Vic and Donna.