unless you pitched a shit load of infecting bugs (like your dog barfed into the fermentor or something) there’s no way an infection would show up so dramatically after just 16 hours. Sounds like your yeast is just really happy and filling your headspace up with foam.
yeah, I pitched some additional lager yeast into it a few days ago, it’s been warmed up to 68F/20C for a couple weeks with no change. Hopefully the fresh yeast will help, if not I can try adding some glucoamylase.