Ah there you go with your coaching 101 again.
Being up by 20 with 7 mins to go is'nt that big a margin in the NBA.You saw Millsap score 11 pts in 30 secs against Miami. Sloan has always been erring on the side of caution w.r.t protecting leads. And he wont change it just to please stat-obsessed armchair coaches.
Yes, I am going with coaching 101 because my mantra is about common sense that extends to not only the NBA, to not just basketball, and to not merely most team sports, but also to leadership and management in general.
Among the jobs of a coach--and leader-are the following:
(1) To establish a system (which Sloan does pretty well, and which I rarely dispute);
(2) To motivate (which Sloan does pretty well, except when he rewards poor effort/performance with more playing time and good effort/performance with less);
(3) To make adjustments while things are happening (a failure of which has cost at least two or three games this year, largely associated with incomplete satsifaction of #2);
(4) To develop new personnel (which Sloan failed to take advantage of doing last night, as well as other nights).
Your example of Millsap isn't particularly relevant here because Sacramento was already playing only half of a starting lineup (with the on-court combination not really suggestive of making up of 20-point deficit). Toward the end of the game, Utah was playing more starters than Sacto was, which is ridiculous, especially with the risk of injury and with Deron clearly fatigued (which is when injury happens most).
Your claim of "erring on the side of caution" would be less weak if Sloan had kept the bench in because they had proven in the previous two quarters to be superior to what the starting lineup was producing (and this isn't the first night that this is the case btw).
I continue to wait for you and anyone else to cite the probability that a team down 15 points (really 16 to 20 points) at 7 minutes left comes back to win. Conservatively, I peg it at 20%, give or take 15%.
It seems that Phil Jackson, who has about as many rings as Sloan has fingers, normally subs in the starters when the lead evaporates to 12, 10, or even 8 points. Sloan's decision was especially damning with Deron clearly stating in the postgame that he was slow and had no lift.
Here's a citation of Alvin Gentry leaving the bench players in the game -- coincidentally at the 7-minute mark also -- because they were doing better than the starters. That's good leadership. That's good decisionmaking. That's good motivation and development. That's good coaching.
https://www.nba.com/suns/playoffs/playoffs2010_r3g4.html