With the resources of key elements (Repetitive Action Capability) of the Megastructure Combustible Vortex focused on and allocated to that day an alternate patsy was needed in the event Oswald couldn't be used as the patsy, for whatever reason, maybe
Oswald got wise (Nagell's words to him finally sunk in) and chickened out and escaped, had a heart attack, fallen down stairs, been on a fatal elevator ride, got run over that morning, been on strike, was having a bad hair day, maybe even his doubles
were busy or unavailable otherwise, etc.

If not, what other purpose did Factor serve?

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)