If Yuni Betancourt was signed to be a utility infielder and grab occasional starts against lefties, it works out OK.
He's a lifetime .728 OPS guy against lefthanders, which isn't great but plays just fine if you start a lefthanded hitter at positions he can sub at. With Moustakas at third and Getz a possibility at second, Betancourt plays pretty well as a sub for them.
Side note: Betancourt actually never played SS until he got to pro ball. He was a 2B in Cuba. His biggest problem at short was the extreme lack of range, something that will be less of an issue at 2B. There's less ground to cover, and with his arm strength, he can play deeper there than normal to make up for it, too.
If he's an everyday player, it's a goddamn disaster, because it means Gio didn't get it done and is back at AAA.
"You gotta love livin', cause dying is a pain in the ass."