Judicial redemption was created to solve the problem of someone being ejected when they did not even know a tax sale had taken place.

Thats actually a pretty interesting scenerio, if a squatter entered a property would you have lost posession On Judicial Redemption and restarted the clock since you would have to eject the squatter or would a no trespassing sign allow you to arrest, or shoot, the squater vs ejecting them while still maintaining possession? 

And from my quick "Google" searching, you may not be able to evict, but instead may need to file for an Action for Ejectment.

I gave him until October the 1st to handle this and if he doesn't I will be filing an ejectment suit. 

These are often transferred in bulk... with the deed having page after page of legal descriptions and possibly a chart of annual rents.It should be easy to find people who own hundreds of ground rents by limited research or just asking around.Each ground rent gets registered with SDAT using their form.You don't foreclose a lease... you pursue an ejectment action or action for possession.

If so, you may need to bring an ejectment action instead of an eviction action.

It is possible that if the deal goes south, the tenant may in fact have some equitable rights, and hang you up in court and possibly force an ejectment which is different from an eviction.Not knowing the laws in your state, I'd advise you to consult a competent real estate attorney and have them review (or draw) all the docs.

I have filed papers for summary ejectment.

Same results as above.3) If you have not yet obtained possession, and file an ejectment lawsuit, they will counterclaim in the ejectment lawsuit and ask the court to declare the sale void.

This is not an eviction, this is called ejectment.