If its warmer than that, like in the 50's, it could be worse..because the plants might not be "fully" dormant, and fungus is much more likely to grow at those warmer temps if they are bagged up..and if they arent bagged up, then they are more likely to dry out..So IMO the best way to do "unattended" dormancy is if the plants are really cold..35 to 40 degrees..because they can stay in suspended animation for months that way..any warmer, and they might not do so well being alone for a long time..
My CP page: http://1stclass.mylargescale.com/scottychaos/CP
Thanks Scot. It'll be tricky finding that sweet spot. I live in a zone much cooler than the original poster's, so I'll look into your method. Thanks a bunch!