The answer as you will expect is logically NO !
Fact is the tank wasnīt full @ Dortmund and had not been refilled until the incident.
As for the first half sentence where comes that information from. Havenīt found it neither posted in any entry in this thread nor in any of the news links posted !!
As I have written already I assume as well a possibility like this to have happened, but I am not bold enough to state that as a fact.
Instead I am at this point prefer to wait for the findings of the AAIB (BFU), they do the accident investigation