No, you should be fine. Someone can only recover files from an encrypted drive (or virtual file) if they have access to the password.
i.e. if someone gets access to your encryted file system, then they could potentially recover files from it.
There may be 'residual traces' outside of the encrypted file system (just like any files that you use) such as in your paging file etc, and there could be temporary files - e.g. if you unzip something and it uses your unencrypted Windows partition as a temp folder.
Therefore you'd need to try to zap these from the unencrpted partitions - but all data on your tc volume will be safe.
Also, from the Help File (using Eraser|When To Use It?|Special Cases):
In general, one should not erase the unused disk space on an encrypted drive (the same applies to encrypted virtual drives, such as the ones created by PGPDisk, ScramDisk or E4M).
The erasing will be useless because the data saved on the drive is encrypted into unreadable format, erasing may slow down your computer and it may even stop responding, depending on the driver that handles encryption.
Files on the encrypted drives can be overwritten, but this should be avoided because of the reasons mentioned above."