Nothing wrong with some hardball shrewed negotiating....heck, EDIG already sued them with the end point being a trial by jury or Markman hearing...all part of negotiating a settlement.
This is what we want in $$ amount and for that we not only settle out of court limiting your exposure but your competitor is our next target instead of you....a win-win.
Sounds like proper motivation considering the years of infringement on EDIG's back.