This sounds like a first time/one time occurrence for you (fouling the plugs).
I can tell you that if it happens again, you might want to consider installing the Pantera Electronics Ignition Controller? It will fire fouled plugs and cleans them up within a matter of seconds so you will never need to clean them again if you use it.
MSD's will not and in fact have a nasty habit of failing completely after trying to start a engine with fouled plugs.
I run Webers so I am not a stranger to fouled plugs. The P-E positively eliminates the issue for ever.