Sand in my Tire? Death wobble?

[L4CX]

OK, so I went on my first trip to the dunes here in MI (silver lake) and on accident I popped the tire right off the rim. So, my friends went and filled it up again and I waited for about an hour for them to get back. Which was fun in it's self because I got asked "Is everything alright?" about 300 times. Not to mention all the Smurks from the Jeepers.....
Anywho, I drove it down the express way on the way home and it started to wobble at about 60-65. I figured it had to do with the tire so I got to my friends place and switched it out for my spare. The wobble went away instantly. I drove with my spare on for a while and it was butter...
Then I finally put my other tire on after trying and trying to get it off the rim to check for sand but it didn't work and it is still wobbling. Could it be I got sand in my tire and that is causing it to wobble? And if so, How do I get the tire off the rim to check? Thanks guys.

 

[carlover]

Id just take it to a tire shop have them unmount it, clean it out and then remount and balance it.

 

[Paraphoe]

Yea, it can't cost you more than $15-20.

 

[L4CX]

I figured. I was just curious if I could do it, I'm kinda bored. Thanks.