Question about Udyr

First off, I love to play Udyr and I highly enjoy reading LoL lore, so I've got a couple of questions regarding him and his current position.

The primary question being, why is Udyr aligned with the Winter's Claw? In his revised back story, it shows that he has learned how to temper his rage and how to balance it with tranquility.

From what I understand, the Winter's Claw is all about rage and battle, which speaks to pre-Ionia Udyr, but post? Does his ideals really align with Sejunani, who is fighting against the "weak" people of Freljord?

If he's also spiritually tied with the Freljord, shouldn't he also take into consideration Annivia's position?

The only thing I can come up with is that he views Lissandra as a big enough threat that he is going with the side that he thinks has the warriors capable of defeating her? But to do so by waging war on the peaceful, 'weak' Freljordians?

If he was placed in her group to try and balance the amount of champions in each, perfectly understandable. But lore wise it's a bit perplexing.

Thanks for any comments or thoughts in advance! Digging this layout.

For the "weak" quote, it's from Sej's lore: http://gameinfo.na.leagueoflegends.com/en/game-info/champions/sejuani/#champion-lore