Huh? Irish Squad changes... Baffling!

I cant for the life of me figure out whats going on here. Really and truly the logic escapes me.

---Article---
Injuries force changes to Ireland squad

Ireland coach Declan Kidney has been forced to make changes to his Six Nations squad due to injuries.

Paddy McAllister sustained a knee injury while playing for the Ulster Ravens in the British & Irish Cup and has been replaced in the senior squad by Leinster loose head prop Jack McGrath.

Munster wing Simon Zebo, who shone in his side's Heineken Cup victory over Northampton, moves from the senior squad to play for the Wolfhounds.

Zebo will replace Luke Fitzgerald, who has failed to recover sufficiently from a neck injury to either be considered for the game against the England Saxons or for the Ireland training camp.

Ulster wing Craig Gilroy has been drafted into the senior squad to replace Zebo.

Elsewhere, Andrew Conway, who was also due to train with the senior squad in Limerick as one of the six additional players, has had to pull out due to injury, with his team-mate Fionn Carr replacing him.
---END---

So let me get this right, if thats possible.
Fitzgerald was named in the Wolfhounds Squad but failed to recover from injury.
OK good i get that.
But DK has removed Zebo... Hattrick Scoring! Northamton v Munster, winger from the SENIOR squad and replaced Fitzgerald in the Wolfhounds??? Am i getting that right? Zebo scores a hattrick in a crucial Heineken cup game and his reward from DK is to be demoted?

And Craig Gilroy has been brought into the Senior squad to replace Zebo.

Is there some new form of logic that is designed to confuse and baffle people?

The only logical explanation is that DK wants Zebo to play in the Woflhounds first then draft him into the Senoir squad, But why call him in to the senior squad in the first place? Then when he goes out and scores 3 tries for Munster he gets sent back to the Wolfhounds...

Craig Gilroy Deserves his shot and im happy for the lad, but seriously whats going on here?