First of all even if we decline signing him u to an ELC this year he only misses his paycheck for 1 year. Waiting to enter free agency wouldnt make sense because he would have to wait an additional 2 years to get to that point where he enters free agency. Brock is a character guy I don't see him ruining his great reputation by doing that.
It's pretty self explanatory if he advances... Frozen four is between April 6th-8th, Canucks last game is on April 9th unless Brock signs his elc and flies to Vancouver to play on the 9th you should be able to answer the question for your self.
Oh my Lord you really don't understand do you, Tanev was playing 2nd pairing for a while this year while edler was with stecher, now that doesn't mean stecher is outplaying tanev right?