That model has a range. The 60K projected is just the median bound. The upper-bound is 130K. I think we'll be nearer to the upper bound based on the trends of how this virus seems to ride its plateau. Check out Italy. They hit 793 deaths on March 21st (their first big peak). Nearly a month later, they're still reporting daily deaths in excess of 500, about a 30 percent decrease. And they've collectively locked down harder than us.
Even if we average a 40 percent drop in daily deaths from here on out over the next 30 days, that'll put us at 80K deaths. And deaths just won't flatline to zero. It'll be a gradual descent. So over this month long gradual descent, we could easily see another 20K deaths.
The only factor that could keep us under 100K is if the New York situation "burns itself out" because we vastly underestimated the true case rate count. If it's by something like a factor of 50, that means 10 million have already been infected in NY, and hopefully many of those cases were mild. In this case, the virus will obviously have fewer "virgins" to infect and the death rate should fall like a rock.