Quaternion, Euler Angles and Atan2

I have been working with configurable joints and have needed to read the x,y and z axis rotations.
To do this, I've been using Quaternion.EulerAngles(), but ran into a problem when going from 275 down to 265 degrees. I found that values less than 270 were returns as > 270.

Example: 268 --> 272
260 --> 280

This problem, I think could be caused by the Unity EulerAngles() using the Atan function instead of Atan2 to calculate the angles from the quaternion compononents. See the article on using Atan2 for conversion. (click here)

Can anyone confirm that EulerAngles is not able to return angles between 90 and 270?
I'm still on 5.0.2 due to other joint issues, but did see any mention of this in the IssueTracker or forums.

Thanks.