Bad grades on semester before transfer–rescindment?

I’m trying to get into UT Austin and have been accepted to Electrical Engineering.
My overall GPA was 3.77.
This sounds very foolish, and it IS foolish, but this semester, I have just slacked off, and got bad grades. I did not know that there was something called a rescindment; I thought that once you are accepted, you are accepted for good.
Anyways, the grades that i will be getting is as shown below:

Dif Eq: A
Composition 2: B
Technical Writing: C
Beginning Spanish 2: D

What are my chances of getting rescinded? After this semester, my GPA will drop down to 3.5~3.6.

I think the general requirement is 3.5 GPA for the semester with no grade below 2.0. You might be in hot water - call soon and ask the questions early.