And there's nothing in the following sentences that corrects this garden path assumption.
>Then Ulbricht walked into the public library and sat down at the table directly in front of me
Would not confuse as many if you wrote
>At the time of his arrest Ulbricht walked into the public library and sat down at the table directly in front of me
Or even clearer
>At the time of his arrest Ulbricht had walked into the public library and sat down at the table which was now directly in front of me