I consider this one as a good one too:

AP Maynard (Bad) vs. Micro (Vess)

In AP Xabe and AP Maynard

Yep, the same applies if you use the sentinel on a backstabbed ally. Sentinals ability is either or.
Though your spirit should have become a 3/7, right?!

AP Maynard (Baduruu) 0-2 TJ Segalion (Lance)

In AP Maynard