Pretty much this. I have a great relationship with my boss. If the time comes where he needs to let me go, I need 2 words from him [which could be in email] and then the only things I care about that day are the details of the severance.
No disrespect given nor received, but this is all business at that point. Some other day, we can work out any transition plan we need to work through and I'll happily hang out with him socially afterwards, but the things I need from the company at that moment are the severance details, nothing else. Emailed attachments are perfect.