Yeah, I'd say that unfortunately, saying you were new in Labyrinth may have made you a target. And its ridiculous that it happened because with the gear people have now having one dps and healer at ilv 54 ish shouldn't have caused any problems.

Now as for advice... The best thing you two could do is learn your classes as best you can because playing your class well will always be useful. The dps forum here is a great tool to use to learn your rotation. One of you is a drg so I recommend checking out the Rotation Reborn thread in the dps forums. Has a great guide for the dragoon rotation. I don't heal and haven't been in the healing forum very much but I'm sure the threads there can give you some good advice and direction.