Just got one! So glad they're back in stock. I don't know how these were ever considered for being discontinued, as I was at the park 30 minutes and saw 10 people wearing them. Just a heads up, get them while they've got them, if you're interested.
I saw them being worn in WDW too.. Assuming they were newly purchased, which they looked, then I guess whatever decision to get them restocked needed to be made needed to be made with WDW's approval too like we thought :P. Nice that they were considered important enough to get brought back in both parks though.
the hats came back in november the weekend before the holidays started
my friend bought one on the first day they returned according to the cast member. i remember because she freaked out when we discovered they exist again