No, Biden's votes go to Biden. If the ticket took 300 electoral votes then Biden would get 300 votes as vice-president.
Now does this mean that we could have President McCain and VP Biden?
No. In my scenario above, Obama would have 300 electoral votes and McCain would have 235. Obama's disqualification isn't going to change that. But say they disqualify all of Obama's electors, then McCain still has 235 electoral votes, not enough to win. If it goes to the House then they will pick a president. Since the majority of the state delegations are dominated by Democrats then I'd expect them to pick Biden as president.
If Zero’s votes are disqualified then McCain has 100% of the qualified electors and hence would be president.
Your “expectation” may not be what the electors would do. They are free to anything they want.