List of MLB 3B who developed chronic back issues and were forced to switch positions or retire:
Rolen, Crede, Chavez, Arenado, Wright, Beltre, Glaus, Lowell, Youkilis, Ventura, Blalock, Zimmerman
Maybe moving Yoan back to 2B (or if TA is dealt SS, yeah I said it) could be a legit solution if it kept him healthy. I think we are at the throwing s%*# at a wall point, because doing the same thing every year isn't working