Nothing is official in the recruiting world until the paperwork has been signed, sealed and delivered. And as of 10:55 p.m. Wednesday, Seantrel Henderson's letter of intent had not been received by USC.

Shortly after he announced his decision Wednesday afternoon, the USC site had his name listed among the other Trojans signees. But his name was removed from the list soon after. During a news conference Wednesday around 7 p.m. Minnesota time, USC coach Lane Kiffin said he anticipated no problems in receiving signed letters of intent from all the players who committed to the Trojans.

Asked why Henderson was not listed, Kiffin said, "A number of our guys' papers have come in and we have to go through a process through the university that takes time, so as you see guys that signed late in the day aren't on here, the guys that have signed early have gone through that process."

Another question to Kiffin was posed, asking if any players who announced their intentions to sign with USC may not actually sign a letter of intent for a while. He said, "I would not think so. That would shock me."

It appears that Henderson is waiting until NCAA sanctions are levied against USC. Here is what the New York Times reported tonight:

"Seantrel Henderson, the highly recruited offensive lineman who announced Wednesday that he was going to Southern California, has not signed a letter of intent to play for the Trojans. According to Henderson’s father, Sean, he will wait until U.S.C. appears before an N.C.A.A. infractions committee from Feb. 19-21 to hear about possible sanctions for the program before deciding whether to sign the letter. Though the Trojans are not likely to hear about any possible sanctions at that time, Sean Henderson said the hearing would give the family a sense of where the process was headed.Henderson has until April 1 to sign a letter of intent. After that, Seantrel Henderson could find himself in a situation similar to Terrelle Pryor in 2008. Sean Henderson declined further comment."

John Millea is on Twitter at twitter.com/stribjohn