Here is what I promissed
To post pics of boss yet unreachable in Ulduar.
But in addintion to this (with great help from Scrimine/Metro) I understood mechanics on how to get in this place. Here we are. Boss comes as bonus.
Here is strategy:
1. A raid is created with 11 members. One stays outside and get leadership.
2. Members (either all, or 3 with warlock among them. For us it's Peter's Cindel) shut game down by alt+f4 and stay off for mnute or two.
3. Meanwhile leader kicks all off members from raid.
4. Guys log back on appearing at train station deep inside Ulduar.
A bit offtopic. Here is pic of insides of working train

5. Leader invites all members back. They are still all in different Ulduars (server creates session for each).
6. Raid mebers relog to log back in same session (for that don't forget to have all instances resetted before joining, guys). Welcome to new Ulduar
Now question:
When we go? Guild raid.