You need the second command that gets sent when you release the pedal. The MIDI Command spreadsheet says this about CC113:
Starts song transition
(Selects the next part)
1: Starts transition, will jump to Part 1 on exit
2: Starts transition, will jump to Part 2 on exit
3: Starts transition, will jump to Part 3 on exit
126: Starts transition, will jump to previous part on exit
127: Starts transition, will jump to next part on exit
Transition will continue looping until value is changed to 0.
In other words, you need to send a second CC113, VALUE=0.