It's possible. But we know this is a group think organization. Big decisions, like cap projections, the type of players they draft, & the type of Free Agents they sign is a decision they make together.
Just like Wade is distancing himself from the decision to bring in Ed Reed, for all we know Kubiak & Smith were trying to be cautious & follow their same plan, but McNair said, "Think outside the box boys... this is a golden opportunity. Surely the cap will increase after the lock out." & there were a lot of reasons to believe it would, primarily because that is the way the NFL had worked up until that point.
Smubiak might have wanted to stick to their prototypical type... team leaders, high motor, self motivated, choir boys; but McNair said, "Think outside the box boys. We need to get a bit of Nasty on this team. The locker room is strong & we need bad boys to win at the highest level."
Smubiak probably wanted to stick with their prototypical FA signings... young, upside, displayed leadership; but McNair said, "Guys, it's Ed Reed. Be bold, take a chance."
I'm positive it did not go this way, but for all we know Kubiak was on the conservative side of all these decisions & someone else; Cal, Rick, Bob... sold the think-tank on the less conservative approach.
We don't know. But if those are the reasons we're doing so badly right now, that doesn't spell "Fire your Head Coach" to me. That says "Fire the GM"
Now if you're saying this is a talented team & the coach just isn't getting it done.... that's a different story.