I don't think they would delete them, however, if they would have stayed open, which any prudent busness would have done, bored domainers could have upped their bids considerably.
You will have to look at alternatives to namewinner because i don't think they will be in business a long time, their other competitors did not simply take a month off.
I think the writing might be on the wall with the WLS system for namwinner. Just a feeling of mine....
D.