For what it's worth

[CecilOne]

Originally posted by WestMichiganBlue
Fed Umpire Manual pg 37, section on Time out - Suspension of Play. I am not going to type it all here, but it is very obvious that "holding up" is NOT Time Out.
WMB

And besides that, one of the pitching infractions is pitching while "play is suspended", but there is no rule about pitching while "play is held up". Therefore, when a pitcher attempts to pitch during a holdup, play becomes suspended an instant before the picth is released.