Why do you think Baldwin was going to be cut? It's not like the Chiefs are exactly stockpiled at wide receiver.
Reporting from training camp (i.e. St. John, Petro, Danny Parkins, etc.) was that he'd had a horrible camp, that he was dropping balls, and that he'd basically checked out mentally.
Then, following Baldwin's drops against the 49ers, Reid says of Baldwin: "I can tell you that when given the opportunity in this league, you’d better catch the football.’’
Seemed like the writing was on the wall.