This is an example of why we need to be careful not to just aggregate all deaths. Yes, the total is clearly extremely important but we need to consider the different components.
Sadly, much of the damage has already been done in the care homes. The residents are often sitting targets, with the virus being brought in by care/health staff who go from home to home and some family visitors . The only way to control that now is through testing and ensuring as much isolation as possible from other residents and visitors. I'd have though sadly that the chances of survival once infected are low so the key must be to isolate to stop further spread.
Loosening the lockdown for the non-care home population would not have much impact on the level of care home deaths over the coming days and weeks apart from where care/health staff and visitors are coming in. Some sort of relaxation outside care homes is not too far away (starting mid- late May, phased over several months with social distancing still in place).