I wasnt' sure what that plate was for other than to hold the sensor out of the way. However, I did remember how it looked when it was on there, so I put it flush to the knuckle and LIGHTLY tapped it with a hammer to flatten it back out/make sure nothing rubbed. I will check to make sure the rotor spins without rubbing, although it seems pretty far away and I don't think it will. Maybe when I look at it now, knowing what it does, I'll realize it'* closer to the rotor than I thought. Thanks again for the help!
I made out OK. Funny, it took me 20 minutes to get the car jacked, brakes off, axle nut off, and one of the 3 backing bolts. Took me two days to get those two bolts off. Went and got two new bolts, came home, and 20 minutes later had everything back together- except the wheel. I lost one of the lug nuts in the incident, and they are tuner nuts, so I'm waiting for 4 new nuts to come in. They should have been in yesterday but the wrong set got sent. Once they come in, I'll throw them on and I should be good to go. Thank you for the help too!
Bill and Archon, I don't know what I would do without your advice on this forum, you've gotten me out of more than a few jams (either directly or by finding posts where you helped someone else with the same problem). It is much appreciated!
I'd also like to thank TrueWildMan who was kind enough to PM me a few times with information on how he cut the holes around the bolts open. His information told me that the sawing would work, and that the threads were only in the part that I was replacing anyway. The fact that he cut through that steel with a hacksaw is also unbelievable!