Yes and says has unlimited returns. There is nothing in there that says after the 21 days they are don for the season. I think what that does say is after the 21 days they go back on IR, meaning the 3 week clock starts again.
Understand your stance, but I also think the Unchanged language to me just reverts them back to IR. So with a No Season Ending IR, I think the 3 week clock starts again. Because actually really easy to get around. Put him back on IR for a Shoulder, boom different designation now 3 weeks. I have asked many of the reporters and to date no-one has really been able to clarify, I think because it hasnt happened yet is all.