Revert "hold locks throughout message processing"
Revert "hold locks throughout message processing"

This reverts commit fb5e975d796f2fdc1de26ce2a3fa3df54e9bc380.

chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin,chaincoin/chaincoin