It felt sudden, because Chet had beat the (extended) window given by the Thunder for his return. The right iliac wing fracture–the bizarre, one-of-a-kind hip break forever etched in our vernacular after seeing it in on injury reports for 39 games–apparently healed quickly enough for Holmgren to beat 3-5 week timeline last given by Oklahoma City (a target return date was never broadcast by the team). Most of us were assuming he'd wait until after the All-Star break to play again, even if just as a precaution.
We don't know how much he'll play. We don't know how rusty he'll look.