I'm not sure what dumping physical memory to disk during a BSOD does exactly, but is there a chance that it dumps all data from RAM to the HDD un-encrypted, because I doubt Truecrypt works during a BSOD? On the other hand if the whole disk is encrypted there is nowhere to dump that much data as the whole disk appears full and RAM is a few GB's.
Most operating systems, including Windows, can be configured to write debugging information and contents of the system memory to so-called memory dump files (also called crash dump files) when an error occurs (system crash, "blue screen," bug check). Therefore, memory dump files may contain sensitive data. VeraCrypt cannot prevent cached passwords, encryption keys, and the contents of sensitive files opened in RAM from being saved unencrypted to memory dump files.
This is no different for TrueCrypt.
As the links shows, memory dumps can be disabled.