- snip -
it could be that Eligius did not mine the block.
^^ this ^^
Blockchain.info does not know who mined any blocks. They only know who relayed the block to them. The information provided on their website even says "Relayed by" not "mined by".
There is nothing in the protocol that requires timestamps to increase with every block. There is also nothing in the protocol that requires the miner to include any more transactions than the block reward.