Why does it say here "v'Arach"? Above (verse 8), it says "v'Archu"!
Ramban (6): Above, the plural teaches that many Kohanim gather to offer the Olah,due to "b'Rav Am Hadras Melech." Here, the singular teaches that it is Kosher even through one.
Da'as Zekenim (8), Hadar Zekenim (8), Moshav Zekenim (9): Here, one Kohen can arrange limbs of a Seh. Above, for a bull, at least two are needed.