Found a dicovery. Someone help me? DLC unlock?

[CoreTaku]

So I went to the secret area in Skater Heaven by hopping in the volcano, and where they used to have a hieroglyphic kinda symbol thing you could crash into, they replaced it with a UFO. I had to see if I could grind it of course. Grinded it from UFO's left side to right side, and it said I unlocked some DLC. I went to see what it had unlocked in my "Skate Shop", but couldn't find it, because I had too much new stuff I hadn't looked at yet. Anyone maybe clarify as to what I unlocked?? Looked, but only possibility I saw was a Baker shirt with a glow in the dark logo. Maybe someone help me find out what grinding the UFO gave me? Lol.