Screen buffer overrunning on Model 100

[oktology]

The Tandy Model 100 only has a 40x8 screen, so I need to pause frequently to be able to read much of the content various BBSes spit out. However, when connected to my M100, the WiModem will spit the entire received text, and will not allow anything to be sent to the remote server while it is printing, meaning I have to wait sometimes minutes before I can interact. This behavior continues after disconnecting from the BBS; the WiModem will deliver all the text it has received regardless of whether it is even still connected, with seemingly no way to stop it other than rebooting the WiModem. 

Needless to say, this is a big usability issue. What am I doing wrong?