The implication is crystal clear - that Wagoner made an uncorroborated statement about what one of the gang members said. "an item of idle or unverified information..." (see #2 in the link)
http://dictionary.reference.com/browse/hearsay?s=t
You still don't understand the definition of hearsay. His claim of what he was told by his attackers isn't idle, and it's definitely not "unverified information or gossip" as he is making a direct claim (he witnessed what was said). What they
said may be unverified, but his claim that he heard it is a direct claim (what he personally witnessed). The fact that he said it is verified, because he's the one who said it, but what
they actually said is not verified. But that's not hearsay (unless he uses what they told him as proof in court that they were taking part in a gang initiation). Hearsay would be if he is making a claim that someone else told him happened, something that he didn't actually hear. If you were to say,
"Rickey told me that the attackers told him..." then your statement about
what Rickey was told would be hearsay, because you didn't personally witness them telling Rickey anything. But Rickey saying,
"I heard them say..." would be direct testimony of evidence of what Rickey heard, even if Rickey's testimony of what they said cannot be verified or corroborated.
From the same Dictionary.com page:
Hearsay
Information heard by one person
about another. Hearsay is generally inadmissible as evidence in a court of law because it is based on the reports of others rather than on the personal knowledge of a witness.
In this case, Rickey has direct personal knowledge as a witness. He didn't hear
about what the attackers said (hearsay), he heard it
directly from the attackers.
If what the attackers told him is not able to be verified, that doesn't make Rickey's statement hearsay, it simply makes it an unverified allegation. Hearsay can be corroborated and verified, and still be hearsay, by the way.