To provide some peace-of-mind, I am currently not seeing any disruptions or concerns with networking connectivity looking over your Linode and the host machine where you Linode resides at.
Other weird things:
Nothing in the MySQL-slow log
Same slow down on staging at same time (no link)
MTR = ping + traceroute
Jackpot (tmux is handy)
while true; do mtr -rwbzc 100 45.XX.XX.XX >> mtr.log 2>&1 && sleep 1; done;