Not exactly, but you can just set up the account to use POP3/SMTP like any other. Press Ctrl-Shift-T to start the Add your email accounts wizard, Select Manually configure server settings, then POP3 on the next page. The settings to use are:
Incoming (POP3) Server
- Server address: pop3.live.com
- Port: 995
- SSL: Yes
Outgoing (SMTP) Server
- Server address: smtp.live.com
- Port: 587
- Authentication: Yes
- SSL: Yes
Log-on username: Your email address
You should not have Include this account when receiving mail or synchronizingselected for both accounts simultaneously*. If you sign in in Windows Live Mail with the same email address, you may find that the DeltaSync account synchronizes mail messages regardless of this setting (another instance of your 'bug'!).
* Right-click on the account name in the folder pane and select Properties to see and change account settings. This one is on theGeneral tab.