It happens in the equity products on eurex as well.
The volume drops right now have little to do with these spoofers, its happened in all financial futures, CME has had it the worst i think. Although i don't doubt much of the damage has been done by the exchanges algo based decisions, there is good discussions on this on ET. We must remember we have many less people to trade with these days however unfortunatly. I never foresaw markets thin out like this.
The flippers/spoofers have made me and my other local friends £,££££ in eurex if you understand what they are trying to do. Personally i don't trade fixed income but i have seen people use the person spoofing bid& offers to their advantage in bunds. We dont do spreads.
I have seen him get hit occasionally for 1k+ in eurostoxx. If he is willing to risk it then fine imo, although in such low volume times it can make life particularity hard.