Tebas wanted PSG to have a bad image here, that's why PSG wanted to avoid that.
Paying Barca directly is like saying "Tebas is true". PSG couldn't wait because Barca put a dealine as midnight today.
And I'm sure Barca asked questions, and learnt some things to pass to UEFA before accepting the money.
All in all, well played since it might help getting PSG banned.
But Tebas will also get complaints filled against him apparently, which we don't care since he's a madridista (and far right winger if the rumors are true).