Well look at the bright side. Now the "do not raise the blocksize limit above 1mb" crowd will learn the hard way. People don't want to solve problems until those problems are felt by themselves.
You can fill up any block size limit with this kind of scam.
It is not a question of the value of the actual block size limit itself but a
question of the price you have to pay for scam.
What shall we learn from this kind of experiment:
1) We need a limit on the block size. This limit has to be
sufficiently large for day to day transaction amounts but
sufficiently small to prevent scam to enter the blockchain.
2) There should be some self-adjustment of fees. Clients should be
able to inquire from the full nodes an estimate for a reasonable
fee based on the current content of the mempool. This would allow for
moderate fees under usual circumstances but would increase fees in
times of flooding the blockchain with scam and would turn scamming
into an expensive exercise.