Remote session is halted while a virus detection/event occurs on the local computer. Local "appears" frozen, but it is just that the AVG screens are not transmitted to the remote computer.
Michael, Are you referring to an AVG remote session?..
[1] (https://support.avg.com/SupportArticleView?l=en&urlName=How-does-AVG-remote-support-work&q=remote+support)
[2] (http://www.avg.com/us-en/avg-go-tech-support)
AVG Guru