Infield fly

[jmkupka]

IF in effect, I'm in C, fly ball (not sky-high, but higher than a humpback liner). Whatever... I didn't think F5 was camped out under it so my hand doesn't go up.
She doesn't catch it (of course). Not a catch and drop, just a flubbed shoestring miss, near 3B, custom made for a double-play. Which does happen.
OC freaks, "why no IF!!"
My partner defuses the situation "I have an IF"

We send the runners back to 1B & 2B, and everybody's happy. Even defense.

No way I'm overrulling this but I'm thinking, "This can't be right, right?"

I've heard it's never too late to invoke IF (to an extent), so is this the correct way to reconcile the late call (because the late call put the runners in jeopardy)?