From reddit:
[QUOTE=Deca (/u/Sil3x)]
Hello all,
We have identified a bug related to the recent wave of disconnections - we are working on fix. In the meantime, we have made all items Soul-bound in RotMG as a temporary counter-measure. We understand the impact on the in-game economy / trading and hope to lift it off as soon as possible.
Sorry for the inconvenience this causes to you guys.
The Deca Team
[/QUOTE]