Take a good hard look at the Bell's filings and timings, not just a single document. They have drug this out and the media involvement happened after yet another filing. It will be interesting to see the full account of it all Innovation promised once all is said and done. However Trusscott Rossman can probably find a way to spin it for Bell's.
I'm not sure I agree with your interpretation of the filings. Bell's most recent filing asks for an extension for discovery because Innovation--allegedly--failed to adequately respond to discovery. When one party gets cagey about responding to discovery and fails to provide responses as required by procedural rules then the only thing you can really do is more discovery. The party improperly resisting discovery has no room to complain about the extension as it is their conduct motivating the extension.