I'm not sure King would mind if they explained away Wally's actions as the machinations of a giant space bug or dark multiverse goo or a wizard farting. He's been pretty vocal recently about how he gets that audiences didn't accept what he did with Wally. He seems to have made peace with the reality that HiC has some fans who dug what he was going for, but that readers simply did not want to see Wally West portrayed that way.