Here is a PowerShell Script which uses the Out-Gridview to build a GUI to force free Tapes in SCDPM

You can easily choose your Library and your Tapes which you want to delete the Recoverypoints on and marks the Tape as free.

Script is using the Force-FreeTape.ps1 from Microsoft SCDPM

More Information: http://www.techguy.at/tag/freetapewithgui