Just to be clear, you can still do this but it is now a large negative effect (no longer neutral). In the present worlds, offering the RS, followed by informing of Non-RS, doesn't just remove the promise of starts/minutes but what seble has changed is that any drop of promised minutes carries a huge recruiting effort penalty so you could end up way lower than you started off in the first place (lower than before you offered the minutes/start in the first place).
This was to close a loophole where large minutes offered multiplies subsequent recruiting effort and then you could remove the minutes later but keep the previous gains.