REPLY: I'm not disagreeing with Rich's answer, but you must determine whether or not K45 was making an attempt to go after the loose ball himself. If it's a momentary grab to get the receiver out of the way so that he himself can catch/recover the loose ball, I agree with Rich--no foul. But...if his grab is designed to remove the intended receiver from the play so that K's teammate might have a shot at the loose ball, then it
is definitely defensive holding.
And...if you do call this defensive holding, your enforcment (previous spot) is not correct. Remember that the kick ended when R25 gained possession, right? Therefore, this was no longer a loose ball play, but a running play, right? And the basic spot for a running play is the end of the run, correct? If the foul occurred while the backward pass was in flight, the end of the run was the spot where R25 threw his backward pass (we don't say 'lateral' here because we're too sophisticated for that
) across the field. That would be R's 30. Let the play run to its completion. Then it will be up to R to decide on accepting or declining the penalty for K's hold. If they accept, enforcement will be from R's 30 (all fouls by the defense are enforced from the basic spot). This is exactly why you need to bag the spot of the backward pass.