I think this is a valid reason of the decrease of the value in DEC. Even though it was meant to be a stablec token, it was inevitable for the token to gain value after thousands of people start playing Splinterlands.
I believe the price will recover and Splinterlands team already has a sustainable plan for DEC value. So far so good in my side ^^
Thanks for informing us dear :)
I also think that it's inevitable that such big changes engender price dips. We will probably see a stabilization soon.