Miners can still use 0.8 as long as they don't create problematic blocks. People running p2pool can stay on 0.8 as long as the don't increase the soft block size limit too high.
Is there a way to configure 0.8 to not increase the block size over the limit?
Because the bug (can't handle blocks over a certain size limit) isn't in 0.8 its in 0.7, and the bug cannot be resolved unless the entire network abandons 0.7 and earlier.
The solving of the fork by going back to the bugged version is a serious problem.