This is the next priority bug we are working on guys - and by Wednesday this should never happen again.
We do offer compensation if you loose your army. To claim it just Private Message me - with Subject: Lost Army Compensation, and inside the message include your in-game username, and town name so we can confirm the lost army value. With-in 24 hours we`ll send you a Bonus code to either get some free Influence or cool units - Dwarves of Dragons.
And sorry about the bad experience.