*Reducing things to a bare timeline of Spamcop reports against the blacklisted IP, we get this:

OCTOBER 20th
3.15.28am: World of Cars Spam A (1975987609) and B (1975987671)
3.15.28am: World of Cars Spam C (1975987653) and D (1975987673)
10.16.50pm: SPAMCOP BLOCK A GOES ON

OCTOBER 21st
10.09.43pm: SPAMCOP BLOCK A GOES OFF. (Spamcop auto-delist by default, in case.)

OCTOBER 22nd
1.34.08am: SPAMCOP BLOCK B GOES ON
7.45.18am: Mil-42 report A (1978870339)
7.45.24am: Mil-42 report B (1978868797)
10.50.31am: SPAMCOP BLOCK B GOES OFF

OCTOBER 23rd
Hostingplex shut down The Weekly.

OCTOBER 26th
1.01.21am: SPAMCOP BLOCK C GOES ON
10.46.27pm: SPAMCOP BLOCK C GOES OFF

Out of interest, all of Hostingplex's sending servers have continued to appear in Spamcop reports, as you'd expect from a company hosting many sites. (The point, of course, which they unsurprisingly miss, is that we're wrongfully accused while actual spammers carry on.)