The Recycle Bin has been added in the current version of Storage Center Command Set 7.0 which is on the Customer Portal: kc.compellent.com/.../Download.aspx
This post has been copied from the former Compellent User Forum and placed here for your reference.  This code is made available AS IS, without warranty of any kind.  The entire risk of the use or the results from the use of this code remains with the user. Recycled Bin content – Originally posted By ThomVis, 15 Mar 2011 ThomVis - Is there any way in PowerShell to list the volumes in "\Storage\Recycle Bin" ? bmiddaugh - Not currently. I know it has been asked that this be added in a future release.
Powershell - Recycled Bin content 