Your "R" was correct on the kickoff. The receiving team then has the option of rekick with 5 yds marked off, their ball at the out of bounds spot or 25 yards from the kickoff.
No foul in your first scenario. In NCAA, B is given the time to adjust their personnel but in NF no allowance. The sub. was within 15 yards of the ball after the RFP and the replaced player was off of the field prior to the snap and prior to the 25 seconds. However, you are right it looks ugly.
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F. Shawn Wortman
aka BIG UMP
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