You are preparing your patient for emergence. You switch them over to spontaneous ventilation and see a nice RR of 16 with ETCO2 around 28-30. The amazing circulator comes over and starts jerking the patient around and lowers the legs out of stirrups which now makes your calm patient buck and cough. They have been breathing on their own for about 3-4 min at this point and you notice after they buck and cough the ETCO2 jumps to 78 then back down. Why did this happen? Explain what the cause was and how to remedy it.