On the contrary. It could make perfect sense to continue sonar mapping as they are pulling out the drilling pipe. If they find any seepage occur within any given strata horizontally, then it could be indicative there are reasons to believe there is seepage within the sub layers. If nothing changes as the pipe is pulled out and nothing comes to the surface it is a good sign things are stable within the underlining strata.
BP could care less about sea floor leaking.
The sea floor is already leaking and another 200 foot hole wont make much difference.
At any rate someone needs to ask them why they did that.