Inbounds play - inbounder delays entry

[just another ref]

I'm still not sure about this one. Is it possible to be "purposeful and deceitful" by just standing there? The case play has the thrower going around a screen while out of bounds. This is pretty cut and dried. But if the thrower stands in the spot a couple of seconds, then enters, how does this gain an advantage?
If the rule included the phrase "return immediately" it would be different, but, as written, pass, wait, step inbounds directly, I don't think I would make this call.

In reality, even if one were hell-bent to make this call, I think it would be easy to overlook, particularly in two whistle. In the OP, the ball went to the corner. I assume the lead went with it.