All the Becky loves NY stuff is overblown since she's been in SA for like 10yrs or so. I mean, if she hated SA she could have moved to another assistant position easily. Granted, under POP the assistant position in SA is better than the rest,
Going forward there's really no reason to think the SA job is that great. No talent, new GM, no free agents, etc.
There are reasons to think that SA would be less likely to fire a coach based on poor performance, but we haven't seen SA tank and how they would treat a non-pop coach. Prior to POP we canned coaches as much as any one, and the franchise that hired Tarkanian should have pause in calling itself the premiere coaching franchise.
The reasons to stay at SA would be faith in draft skills, less pressure, and familiarity. But oddly, San Antonio may actually more pressure than NY because the fans are so spoiled.