I seem to have struck a very strange glitch where neither of my sims are controllable. Time is still passing, other sims in the world are still walking by etc etc but I can not select either of them to direct them. I can't travel anywhere as I can't select them

I've tried repairing the game, deleting cache files and all the usual things but nothing is working. I'm going to try an uninstall/reinstall if that is ok and doesn't break the rules?
This glitch occurred when sim B came home from work, he was on the home lot but his icon was greyed out and I wasn't able to select him. I stopped sim A from what he was doing and got him to select sim B and travel somewhere and then my game stuttered and went into a never ending loading/travel selection screen and then blue screen crashed! The only thing I can think of that caused this was that I was playing on-line as I had forgotten to go off-line from earlier in the day when I was using the Gallery in a different file.