yes. Pork butts hit the "stall" around 175 and can take 3-4 hours (or more) to get out of it. This is the temp where the fats and connective tissues begin to break down. As they break down they moisten the meat and keep the internal temp down. once they are done, it will rise to the perfect temp of 195 with some ease.
2013 Stumps Classic - Delivered 4/15/13
Large BGE - Rescued 2012
2010 WSM 22.5"
2010 Weber genesis gas grill
Rescued 22.5 Weber One-touch gold
BBQ Guru CyberQ
2011 Built UDS - Retired