No, Hole, thats not true.
The outstretched hand signals NO Contact. (your first frame).
The second frame signals Strike. Just like any other strike. A clenched fist by the plate umpire does not indicate out.
No.
And clinched fist indicates strike out.
The lengths some people will go to rationalize this.
Eeven ozzie Guillen says he takes this as luck. He said better to be lucky than good.
They got lucky their sciming cather got the umps to fall for his ruse.