I trust you've figured this out by now, but as it gets a tad confusing, here's a handy reminder for your convenience:

Chris... is in Joey's body, and assumes Joey is in Chris's body.

Joey... is in JC's body, and assumes JC is in Joey's body

JC... is in Justin's body, and assumes Justin is in JC's body

Justin... is in Chris's body, and assumes Chris is in Justin's body