No - re-read the scenario. If A&M wins and Georgia remains in, that would push whom ever is at 10 or 11 (depends upon where Boise State ends up ranked at) out.
I guess you are saying the committee guardrails do not apply to Boise State. So, if Boise State loses their conference championship game, they are out and are not treated the same as the B1G, ACC and SEC teams?
If the guardrails do apply to the Mountain West and Boise State doesn't win that - then another team is out which would be 9 or 10 - that is where SMU is currently ranked.
Something has to give if there are multiple teams outside of the top 12 that get the automatic bid.