Okay I watched the game, it's not like Marchionni made a meal of it. I think he looked a little surprised with the penalty call himself.
I felt that Ayroldi handled the situation very unprofessionally. Bologna deserved the FK. Vlado Smit's challenge wasn't trying to be rough or obstructive...it wasn't a precisely timed tackle, at the same time neither a clumsy foul. (okay...so I'm not sure about the fine line...I think it was just a collision during the run of play)
I really doubt Juventus would have won this match had Ayroldi not awarded a PK. Juve were struggling to create a clear cut chance during the 2nd half despite the dominant possession they had. The red cards killed the match, and despite their counter attack taking advantage of Juve's gap from pushing up forward @ 11 vs. 9 (Buffon's moment) Bologna didn't give a shit about the game anymore.
I'm not anti Deschamps...but we've seen this happen more than once throughout the season, where Juve botch a lead, or struggle to overcome a deficit. This is where the tactician's mastermind is proven. Giovinco was an unpredictable move. We all expected Bojinov, Zalayeta...but this was a smart choice which ultimately paid off.
It just begs the question though, would Giovinco still have coped with less space to work with at 11 vs. 11? I want to see him come on for the next match (Arezzo?).
By the way, on a lighter note he loooked like suuuuch a little baby, just wanted to pinch his cheeks and go coochie cooo

He's too cool!! The innocent baby face, who has the courage of a lion!!