That's pretty messed up given that holding coins is one of the things that the crypto community likes to encourage.
How do you expect to get mainstream acceptance for crypto when coins pull stuff like this? Not only do you have the risk of high volatility, but you also have the risk of your coins just evaporating. That's bullshit.

Given that some of the investors in your coin were in it for the long term, you should leave swap open indefinitely.