This may fall into the category of unplanned design feature. If it doesn't spring back with washing and drying (acrylics I use all go in the dryer) just say it's how you meant it to be. It might work.
Cheating is an option. . . . Cheaters never win and winners never cheat, but smart knitters who want to retain an iota of sanity do, cheerfully. ~~Kory Stamper