Lux cut me off xp/cs

I played veigar against lux, and they had frozen the wave outside their tower.
Couldn't farm or get XP at all.

It's super frustrating that I couldn't do anything at all. Do I just sit there for the whole game or just leave them completely?

Just a note for when you reply, I know I made mistakes that got me into that situation, I realize what I did in that sense, but still want to know what I would do if it couldn't be avoided.