Winsock.dll cannot be swapped out by a program.
If something does, WFP will detect it and replace the altered copy with one from DLLcache.
If you still want to shoot yourself in the foot here is how:
use the expand command to expand from a .dl_ to a dll.
The copy command in recovery console is also capable of expanding on the fly. Just do:
copy sourcepath\<filename>.dl_ destinationpath\<filename>.dll