Once you go to the hotel for rest, your sit does end. Actually it ends once "released into rest". So you might not even be at the hotel yet. Yes, we discussed work arounds like the airport hotel while having scheduling think youre at the concourse food court, waiting for reassignment.

From Scheduling Chairman:" For pay purposes, pilots who experienced long duration waits at the airport without contact from crew scheduling should ensure that their pairings reflect an accurate time for the end of the duty period. These duty periods should only show as completed at the point in time when the pilot entered their rest facility, whether it was provided for as required by the CBA or the pilot was directed or permitted by a chief pilot to purchase a hotel room and expense it back to Spirit. In all cases, rest must not begin until duty was completed, which includes post-flight time spent at the airport waiting for further assignment or instructions."

Rescheduling guide shows this is when the SIT ends