This has happened a couple of times, break distort and bent from ironing when they were left in shirts and washed, strangely this appears to have happened after visiting the Wig & Pen after work. The stays I had came from H&H, H&K all white plastic even Sportscraft a few years back used that and the CT ones are brass which I have never used.
I put up a similar question at AAAC and was provided with these http://www.hangerproject.com/closet/bone-collar-stays.html
Selvaggio where did you get the clear plastic ones? Did they come with the shirts? When I was recently in Sydney I went to Henry Bucks but they no longer sell packs of them, merde! Mind the staff member gave me a couple of pairs and I did pick up a nice Zegna tie during the sale so not a waste of time.