Rollbacks are there to solve major problems. This was the major problem of lava having the ability to burn things turned back on and wood and cloth all over the server lighting up. It was unfortunate but the only thing we could do was kick the server back. Unfortunately in turn, that means that many people have lost work. Many are angry, many are displeased, I'm sure you are, but that is life playing on alpha software.
That was kind of a message for other people as well who were asking about getting things reinstated. Lim might be able to give your items back with a spawning tool which won't have a significant server impact, but cuboids on SMP don't work the same, and take up a HUGE amount of memory apparently due to zoning based issues. I got Lim to cuboid something for me once, not knowing the damage it made until he finished it. So unless he is feeling compassionate (but considering our growing costs to SpecialAttack I think we need to cut back on everything we can) you might have to get back in there and mine some more. And anyway, isn't mining and crafting what the game is all about?
