The former Livorno talisman was hoping for a dream start to life with the Crociati, but his new side was beaten by a late Inter rally, which included a debatable penalty award.
"Inter scored in the only way they could have - from the penalty spot," he growled.
"I was angry and I think reasonably, but I'm stopping myself from dwelling on it.
"I think it's only normal to be angered by the defeat and how it happened, but I have to ask myself how the game could turn on its head like that.
"It was a game that we could have drawn and that leaves a sour taste in the mouth. But the worst thing is that when you are amongst the smaller sides everything can be forgotten in 20 minutes whereas if these decisions happen to bigger clubs they linger for weeks."