Maybe the confusion here is about 900 differences training. I do know a couple of guys whose diff training slots were cancelled.
Call crew sched and ask how much reserve coverage we have in Memphis...ask reserve FOs in DTW how many hours they are assigned each month. You'll soon see we are nowhere near fully staffed.
The reason they might be slowing hiring is because we have like 30-40 FOs in the pipeline, and b/c there are about 30ish FOs in ATL who will have to go somewhere. It would make sense to slow the incoming new hires while the ATL guys are allowed time to go through a displacement bid. Otherwise, we'd have to bump new hires from whatever base they bid out of new hire class. It saves a lot of frustration and complications by just hitting the pause button on new hires, re-assigning the displaced ATL guys, then see what the needs of the company are.
Maybe it's also contract stuff.